Home / 15,458.13-21,332.34-8,384.58

Finding the Fourth Proportional to 15,458.13, 21,332.34 and 8,384.58

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Solution

The fourth proportional to 15,458.13, 21,332.34 and 8,384.58 is: 11,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.13 : 21,332.34 = 8,384.58 : x
  2. Step 2: Convert to fraction form
    15,458.13/21,332.34 = 8,384.58/x
  3. Step 3: Cross multiply
    15,458.13x = 21,332.34 × 8,384.58
  4. Step 4: Simplify right side
    15,458.13x = 178,862,711.32
  5. Step 5: Solve for x
    x = 178,862,711.32/15,458.13
  6. Step 6: Final answer
    x = 11,570.79

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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.