Home / 21,422.76-32,143.59-7,384.92

Finding the Fourth Proportional to 21,422.76, 32,143.59 and 7,384.92

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Solution

The fourth proportional to 21,422.76, 32,143.59 and 7,384.92 is: 11,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.76 : 32,143.59 = 7,384.92 : x
  2. Step 2: Convert to fraction form
    21,422.76/32,143.59 = 7,384.92/x
  3. Step 3: Cross multiply
    21,422.76x = 32,143.59 × 7,384.92
  4. Step 4: Simplify right side
    21,422.76x = 237,377,840.66
  5. Step 5: Solve for x
    x = 237,377,840.66/21,422.76
  6. Step 6: Final answer
    x = 11,080.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.