Home / 28,125.14-38,812.64-15,549.89

Finding the Fourth Proportional to 28,125.14, 38,812.64 and 15,549.89

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Solution

The fourth proportional to 28,125.14, 38,812.64 and 15,549.89 is: 21,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.14 : 38,812.64 = 15,549.89 : x
  2. Step 2: Convert to fraction form
    28,125.14/38,812.64 = 15,549.89/x
  3. Step 3: Cross multiply
    28,125.14x = 38,812.64 × 15,549.89
  4. Step 4: Simplify right side
    28,125.14x = 603,532,010.80
  5. Step 5: Solve for x
    x = 603,532,010.80/28,125.14
  6. Step 6: Final answer
    x = 21,458.81

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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.