Home / 28,125.60-38,809.80-15,550.56

Finding the Fourth Proportional to 28,125.60, 38,809.80 and 15,550.56

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Solution

The fourth proportional to 28,125.60, 38,809.80 and 15,550.56 is: 21,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.60 : 38,809.80 = 15,550.56 : x
  2. Step 2: Convert to fraction form
    28,125.60/38,809.80 = 15,550.56/x
  3. Step 3: Cross multiply
    28,125.60x = 38,809.80 × 15,550.56
  4. Step 4: Simplify right side
    28,125.60x = 603,514,123.49
  5. Step 5: Solve for x
    x = 603,514,123.49/28,125.60
  6. Step 6: Final answer
    x = 21,457.82

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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.