Home / 28,719.81-43,079.33-9,999.50

Finding the Fourth Proportional to 28,719.81, 43,079.33 and 9,999.50

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Solution

The fourth proportional to 28,719.81, 43,079.33 and 9,999.50 is: 14,999.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.81 : 43,079.33 = 9,999.50 : x
  2. Step 2: Convert to fraction form
    28,719.81/43,079.33 = 9,999.50/x
  3. Step 3: Cross multiply
    28,719.81x = 43,079.33 × 9,999.50
  4. Step 4: Simplify right side
    28,719.81x = 430,771,494.94
  5. Step 5: Solve for x
    x = 430,771,494.94/28,719.81
  6. Step 6: Final answer
    x = 14,999.11

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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.