Home / 20,342.09-28,053.35-13,957.42

Finding the Fourth Proportional to 20,342.09, 28,053.35 and 13,957.42

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Solution

The fourth proportional to 20,342.09, 28,053.35 and 13,957.42 is: 19,248.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.09 : 28,053.35 = 13,957.42 : x
  2. Step 2: Convert to fraction form
    20,342.09/28,053.35 = 13,957.42/x
  3. Step 3: Cross multiply
    20,342.09x = 28,053.35 × 13,957.42
  4. Step 4: Simplify right side
    20,342.09x = 391,552,248.09
  5. Step 5: Solve for x
    x = 391,552,248.09/20,342.09
  6. Step 6: Final answer
    x = 19,248.38

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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.