Home / 21,442.68-29,592.54-13,491.72

Finding the Fourth Proportional to 21,442.68, 29,592.54 and 13,491.72

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Solution

The fourth proportional to 21,442.68, 29,592.54 and 13,491.72 is: 18,619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.68 : 29,592.54 = 13,491.72 : x
  2. Step 2: Convert to fraction form
    21,442.68/29,592.54 = 13,491.72/x
  3. Step 3: Cross multiply
    21,442.68x = 29,592.54 × 13,491.72
  4. Step 4: Simplify right side
    21,442.68x = 399,254,263.77
  5. Step 5: Solve for x
    x = 399,254,263.77/21,442.68
  6. Step 6: Final answer
    x = 18,619.61

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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.