Home / 10,526.81-15,787.49-3,129.30

Finding the Fourth Proportional to 10,526.81, 15,787.49 and 3,129.30

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Solution

The fourth proportional to 10,526.81, 15,787.49 and 3,129.30 is: 4,693.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,526.81 : 15,787.49 = 3,129.30 : x
  2. Step 2: Convert to fraction form
    10,526.81/15,787.49 = 3,129.30/x
  3. Step 3: Cross multiply
    10,526.81x = 15,787.49 × 3,129.30
  4. Step 4: Simplify right side
    10,526.81x = 49,403,776.81
  5. Step 5: Solve for x
    x = 49,403,776.81/10,526.81
  6. Step 6: Final answer
    x = 4,693.14

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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.