Home / 15,318.43-21,139.35-8,604.16

Finding the Fourth Proportional to 15,318.43, 21,139.35 and 8,604.16

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Solution

The fourth proportional to 15,318.43, 21,139.35 and 8,604.16 is: 11,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.43 : 21,139.35 = 8,604.16 : x
  2. Step 2: Convert to fraction form
    15,318.43/21,139.35 = 8,604.16/x
  3. Step 3: Cross multiply
    15,318.43x = 21,139.35 × 8,604.16
  4. Step 4: Simplify right side
    15,318.43x = 181,886,349.70
  5. Step 5: Solve for x
    x = 181,886,349.70/15,318.43
  6. Step 6: Final answer
    x = 11,873.69

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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.