Home / 15,429.92-21,312.28-11,174.24

Finding the Fourth Proportional to 15,429.92, 21,312.28 and 11,174.24

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Solution

The fourth proportional to 15,429.92, 21,312.28 and 11,174.24 is: 15,434.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.92 : 21,312.28 = 11,174.24 : x
  2. Step 2: Convert to fraction form
    15,429.92/21,312.28 = 11,174.24/x
  3. Step 3: Cross multiply
    15,429.92x = 21,312.28 × 11,174.24
  4. Step 4: Simplify right side
    15,429.92x = 238,148,531.67
  5. Step 5: Solve for x
    x = 238,148,531.67/15,429.92
  6. Step 6: Final answer
    x = 15,434.20

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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.