Home / 31,654.02-43,681.20-18,225.78

Finding the Fourth Proportional to 31,654.02, 43,681.20 and 18,225.78

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Solution

The fourth proportional to 31,654.02, 43,681.20 and 18,225.78 is: 25,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,654.02 : 43,681.20 = 18,225.78 : x
  2. Step 2: Convert to fraction form
    31,654.02/43,681.20 = 18,225.78/x
  3. Step 3: Cross multiply
    31,654.02x = 43,681.20 × 18,225.78
  4. Step 4: Simplify right side
    31,654.02x = 796,123,941.34
  5. Step 5: Solve for x
    x = 796,123,941.34/31,654.02
  6. Step 6: Final answer
    x = 25,150.80

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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.