Home / 28,720.38-43,054.02-15,402.63

Finding the Fourth Proportional to 28,720.38, 43,054.02 and 15,402.63

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Solution

The fourth proportional to 28,720.38, 43,054.02 and 15,402.63 is: 23,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.38 : 43,054.02 = 15,402.63 : x
  2. Step 2: Convert to fraction form
    28,720.38/43,054.02 = 15,402.63/x
  3. Step 3: Cross multiply
    28,720.38x = 43,054.02 × 15,402.63
  4. Step 4: Simplify right side
    28,720.38x = 663,145,158.78
  5. Step 5: Solve for x
    x = 663,145,158.78/28,720.38
  6. Step 6: Final answer
    x = 23,089.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.