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Finding the Fourth Proportional to 15,493.59, 21,342.02 and 12,501.05

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Solution

The fourth proportional to 15,493.59, 21,342.02 and 12,501.05 is: 17,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.59 : 21,342.02 = 12,501.05 : x
  2. Step 2: Convert to fraction form
    15,493.59/21,342.02 = 12,501.05/x
  3. Step 3: Cross multiply
    15,493.59x = 21,342.02 × 12,501.05
  4. Step 4: Simplify right side
    15,493.59x = 266,797,489.91
  5. Step 5: Solve for x
    x = 266,797,489.91/15,493.59
  6. Step 6: Final answer
    x = 17,219.86

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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.