Home / 28,476.48-42,723.86-13,686.47

Finding the Fourth Proportional to 28,476.48, 42,723.86 and 13,686.47

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Solution

The fourth proportional to 28,476.48, 42,723.86 and 13,686.47 is: 20,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.48 : 42,723.86 = 13,686.47 : x
  2. Step 2: Convert to fraction form
    28,476.48/42,723.86 = 13,686.47/x
  3. Step 3: Cross multiply
    28,476.48x = 42,723.86 × 13,686.47
  4. Step 4: Simplify right side
    28,476.48x = 584,738,546.12
  5. Step 5: Solve for x
    x = 584,738,546.12/28,476.48
  6. Step 6: Final answer
    x = 20,534.09

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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.