Home / 13,356.27-18,419.58-8,570.70

Finding the Fourth Proportional to 13,356.27, 18,419.58 and 8,570.70

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Solution

The fourth proportional to 13,356.27, 18,419.58 and 8,570.70 is: 11,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.27 : 18,419.58 = 8,570.70 : x
  2. Step 2: Convert to fraction form
    13,356.27/18,419.58 = 8,570.70/x
  3. Step 3: Cross multiply
    13,356.27x = 18,419.58 × 8,570.70
  4. Step 4: Simplify right side
    13,356.27x = 157,868,694.31
  5. Step 5: Solve for x
    x = 157,868,694.31/13,356.27
  6. Step 6: Final answer
    x = 11,819.82

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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.