Home / 30,318.93-45,478.40-9,258.12

Finding the Fourth Proportional to 30,318.93, 45,478.40 and 9,258.12

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Solution

The fourth proportional to 30,318.93, 45,478.40 and 9,258.12 is: 13,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.93 : 45,478.40 = 9,258.12 : x
  2. Step 2: Convert to fraction form
    30,318.93/45,478.40 = 9,258.12/x
  3. Step 3: Cross multiply
    30,318.93x = 45,478.40 × 9,258.12
  4. Step 4: Simplify right side
    30,318.93x = 421,044,438.32
  5. Step 5: Solve for x
    x = 421,044,438.32/30,318.93
  6. Step 6: Final answer
    x = 13,887.18

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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.