Home / 15,373.71-21,171.04-13,356.20

Finding the Fourth Proportional to 15,373.71, 21,171.04 and 13,356.20

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Solution

The fourth proportional to 15,373.71, 21,171.04 and 13,356.20 is: 18,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.71 : 21,171.04 = 13,356.20 : x
  2. Step 2: Convert to fraction form
    15,373.71/21,171.04 = 13,356.20/x
  3. Step 3: Cross multiply
    15,373.71x = 21,171.04 × 13,356.20
  4. Step 4: Simplify right side
    15,373.71x = 282,764,644.45
  5. Step 5: Solve for x
    x = 282,764,644.45/15,373.71
  6. Step 6: Final answer
    x = 18,392.74

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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.