Home / 18,385.20-25,370.64-10,428.17

Finding the Fourth Proportional to 18,385.20, 25,370.64 and 10,428.17

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Solution

The fourth proportional to 18,385.20, 25,370.64 and 10,428.17 is: 14,390.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.20 : 25,370.64 = 10,428.17 : x
  2. Step 2: Convert to fraction form
    18,385.20/25,370.64 = 10,428.17/x
  3. Step 3: Cross multiply
    18,385.20x = 25,370.64 × 10,428.17
  4. Step 4: Simplify right side
    18,385.20x = 264,569,220.08
  5. Step 5: Solve for x
    x = 264,569,220.08/18,385.20
  6. Step 6: Final answer
    x = 14,390.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.