Home / 13,657.17-18,819.18-10,470.54

Finding the Fourth Proportional to 13,657.17, 18,819.18 and 10,470.54

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Solution

The fourth proportional to 13,657.17, 18,819.18 and 10,470.54 is: 14,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.17 : 18,819.18 = 10,470.54 : x
  2. Step 2: Convert to fraction form
    13,657.17/18,819.18 = 10,470.54/x
  3. Step 3: Cross multiply
    13,657.17x = 18,819.18 × 10,470.54
  4. Step 4: Simplify right side
    13,657.17x = 197,046,976.96
  5. Step 5: Solve for x
    x = 197,046,976.96/13,657.17
  6. Step 6: Final answer
    x = 14,428.10

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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.