Home / 28,652.29-42,987.23-13,678.51

Finding the Fourth Proportional to 28,652.29, 42,987.23 and 13,678.51

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Solution

The fourth proportional to 28,652.29, 42,987.23 and 13,678.51 is: 20,521.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.29 : 42,987.23 = 13,678.51 : x
  2. Step 2: Convert to fraction form
    28,652.29/42,987.23 = 13,678.51/x
  3. Step 3: Cross multiply
    28,652.29x = 42,987.23 × 13,678.51
  4. Step 4: Simplify right side
    28,652.29x = 588,001,187.03
  5. Step 5: Solve for x
    x = 588,001,187.03/28,652.29
  6. Step 6: Final answer
    x = 20,521.96

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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.