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Finding the Fourth Proportional to 30,000.24, 44,999.74 and 7,813.12

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Solution

The fourth proportional to 30,000.24, 44,999.74 and 7,813.12 is: 11,719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.24 : 44,999.74 = 7,813.12 : x
  2. Step 2: Convert to fraction form
    30,000.24/44,999.74 = 7,813.12/x
  3. Step 3: Cross multiply
    30,000.24x = 44,999.74 × 7,813.12
  4. Step 4: Simplify right side
    30,000.24x = 351,588,368.59
  5. Step 5: Solve for x
    x = 351,588,368.59/30,000.24
  6. Step 6: Final answer
    x = 11,719.52

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.