Home / 28,391.26-42,543.08-17,981.14

Finding the Fourth Proportional to 28,391.26, 42,543.08 and 17,981.14

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Solution

The fourth proportional to 28,391.26, 42,543.08 and 17,981.14 is: 26,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.26 : 42,543.08 = 17,981.14 : x
  2. Step 2: Convert to fraction form
    28,391.26/42,543.08 = 17,981.14/x
  3. Step 3: Cross multiply
    28,391.26x = 42,543.08 × 17,981.14
  4. Step 4: Simplify right side
    28,391.26x = 764,973,077.51
  5. Step 5: Solve for x
    x = 764,973,077.51/28,391.26
  6. Step 6: Final answer
    x = 26,943.96

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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.