Home / 22,459.59-31,006.40-13,509.09

Finding the Fourth Proportional to 22,459.59, 31,006.40 and 13,509.09

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Solution

The fourth proportional to 22,459.59, 31,006.40 and 13,509.09 is: 18,649.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,459.59 : 31,006.40 = 13,509.09 : x
  2. Step 2: Convert to fraction form
    22,459.59/31,006.40 = 13,509.09/x
  3. Step 3: Cross multiply
    22,459.59x = 31,006.40 × 13,509.09
  4. Step 4: Simplify right side
    22,459.59x = 418,868,180.63
  5. Step 5: Solve for x
    x = 418,868,180.63/22,459.59
  6. Step 6: Final answer
    x = 18,649.86

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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.