Home / 13,689.57-20,534.52-5,373.51

Finding the Fourth Proportional to 13,689.57, 20,534.52 and 5,373.51

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Solution

The fourth proportional to 13,689.57, 20,534.52 and 5,373.51 is: 8,060.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.57 : 20,534.52 = 5,373.51 : x
  2. Step 2: Convert to fraction form
    13,689.57/20,534.52 = 5,373.51/x
  3. Step 3: Cross multiply
    13,689.57x = 20,534.52 × 5,373.51
  4. Step 4: Simplify right side
    13,689.57x = 110,342,391.71
  5. Step 5: Solve for x
    x = 110,342,391.71/13,689.57
  6. Step 6: Final answer
    x = 8,060.32

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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.