Home / 18,689.17-28,052.46-13,430.35

Finding the Fourth Proportional to 18,689.17, 28,052.46 and 13,430.35

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Solution

The fourth proportional to 18,689.17, 28,052.46 and 13,430.35 is: 20,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.17 : 28,052.46 = 13,430.35 : x
  2. Step 2: Convert to fraction form
    18,689.17/28,052.46 = 13,430.35/x
  3. Step 3: Cross multiply
    18,689.17x = 28,052.46 × 13,430.35
  4. Step 4: Simplify right side
    18,689.17x = 376,754,356.16
  5. Step 5: Solve for x
    x = 376,754,356.16/18,689.17
  6. Step 6: Final answer
    x = 20,158.97

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1.5x scale

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.