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Finding the Fourth Proportional to 21,658.90, 32,489.49 and 6,077.74

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Solution

The fourth proportional to 21,658.90, 32,489.49 and 6,077.74 is: 9,116.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.90 : 32,489.49 = 6,077.74 : x
  2. Step 2: Convert to fraction form
    21,658.90/32,489.49 = 6,077.74/x
  3. Step 3: Cross multiply
    21,658.90x = 32,489.49 × 6,077.74
  4. Step 4: Simplify right side
    21,658.90x = 197,462,510.51
  5. Step 5: Solve for x
    x = 197,462,510.51/21,658.90
  6. Step 6: Final answer
    x = 9,116.92

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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.