Home / 10,312.40-15,468.84-2,521.28

Finding the Fourth Proportional to 10,312.40, 15,468.84 and 2,521.28

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Solution

The fourth proportional to 10,312.40, 15,468.84 and 2,521.28 is: 3,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.40 : 15,468.84 = 2,521.28 : x
  2. Step 2: Convert to fraction form
    10,312.40/15,468.84 = 2,521.28/x
  3. Step 3: Cross multiply
    10,312.40x = 15,468.84 × 2,521.28
  4. Step 4: Simplify right side
    10,312.40x = 39,001,276.92
  5. Step 5: Solve for x
    x = 39,001,276.92/10,312.40
  6. Step 6: Final answer
    x = 3,781.98

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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.