Home / 28,123.49-38,842.32-19,155.44

Finding the Fourth Proportional to 28,123.49, 38,842.32 and 19,155.44

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Solution

The fourth proportional to 28,123.49, 38,842.32 and 19,155.44 is: 26,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.49 : 38,842.32 = 19,155.44 : x
  2. Step 2: Convert to fraction form
    28,123.49/38,842.32 = 19,155.44/x
  3. Step 3: Cross multiply
    28,123.49x = 38,842.32 × 19,155.44
  4. Step 4: Simplify right side
    28,123.49x = 744,041,536.01
  5. Step 5: Solve for x
    x = 744,041,536.01/28,123.49
  6. Step 6: Final answer
    x = 26,456.24

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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.