Home / 13,285.20-19,892.16-7,425.12

Finding the Fourth Proportional to 13,285.20, 19,892.16 and 7,425.12

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Solution

The fourth proportional to 13,285.20, 19,892.16 and 7,425.12 is: 11,117.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.20 : 19,892.16 = 7,425.12 : x
  2. Step 2: Convert to fraction form
    13,285.20/19,892.16 = 7,425.12/x
  3. Step 3: Cross multiply
    13,285.20x = 19,892.16 × 7,425.12
  4. Step 4: Simplify right side
    13,285.20x = 147,701,675.06
  5. Step 5: Solve for x
    x = 147,701,675.06/13,285.20
  6. Step 6: Final answer
    x = 11,117.76

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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.