Home / 28,102.14-38,780.43-15,526.62

Finding the Fourth Proportional to 28,102.14, 38,780.43 and 15,526.62

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Solution

The fourth proportional to 28,102.14, 38,780.43 and 15,526.62 is: 21,426.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.14 : 38,780.43 = 15,526.62 : x
  2. Step 2: Convert to fraction form
    28,102.14/38,780.43 = 15,526.62/x
  3. Step 3: Cross multiply
    28,102.14x = 38,780.43 × 15,526.62
  4. Step 4: Simplify right side
    28,102.14x = 602,129,000.05
  5. Step 5: Solve for x
    x = 602,129,000.05/28,102.14
  6. Step 6: Final answer
    x = 21,426.45

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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.