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Finding the Fourth Proportional to 15,063.84, 20,785.68 and 9,470.88

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Solution

The fourth proportional to 15,063.84, 20,785.68 and 9,470.88 is: 13,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,063.84 : 20,785.68 = 9,470.88 : x
  2. Step 2: Convert to fraction form
    15,063.84/20,785.68 = 9,470.88/x
  3. Step 3: Cross multiply
    15,063.84x = 20,785.68 × 9,470.88
  4. Step 4: Simplify right side
    15,063.84x = 196,858,681.00
  5. Step 5: Solve for x
    x = 196,858,681.00/15,063.84
  6. Step 6: Final answer
    x = 13,068.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.