Home / 10,459.76-15,686.30-3,438.16

Finding the Fourth Proportional to 10,459.76, 15,686.30 and 3,438.16

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Solution

The fourth proportional to 10,459.76, 15,686.30 and 3,438.16 is: 5,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,459.76 : 15,686.30 = 3,438.16 : x
  2. Step 2: Convert to fraction form
    10,459.76/15,686.30 = 3,438.16/x
  3. Step 3: Cross multiply
    10,459.76x = 15,686.30 × 3,438.16
  4. Step 4: Simplify right side
    10,459.76x = 53,931,978.59
  5. Step 5: Solve for x
    x = 53,931,978.59/10,459.76
  6. Step 6: Final answer
    x = 5,156.14

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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.