Home / 15,458.20-21,332.24-8,384.64

Finding the Fourth Proportional to 15,458.20, 21,332.24 and 8,384.64

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Solution

The fourth proportional to 15,458.20, 21,332.24 and 8,384.64 is: 11,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.20 : 21,332.24 = 8,384.64 : x
  2. Step 2: Convert to fraction form
    15,458.20/21,332.24 = 8,384.64/x
  3. Step 3: Cross multiply
    15,458.20x = 21,332.24 × 8,384.64
  4. Step 4: Simplify right side
    15,458.20x = 178,863,152.79
  5. Step 5: Solve for x
    x = 178,863,152.79/15,458.20
  6. Step 6: Final answer
    x = 11,570.76

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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.