Home / 21,332.81-32,005.36-6,543.90

Finding the Fourth Proportional to 21,332.81, 32,005.36 and 6,543.90

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Solution

The fourth proportional to 21,332.81, 32,005.36 and 6,543.90 is: 9,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.81 : 32,005.36 = 6,543.90 : x
  2. Step 2: Convert to fraction form
    21,332.81/32,005.36 = 6,543.90/x
  3. Step 3: Cross multiply
    21,332.81x = 32,005.36 × 6,543.90
  4. Step 4: Simplify right side
    21,332.81x = 209,439,875.30
  5. Step 5: Solve for x
    x = 209,439,875.30/21,332.81
  6. Step 6: Final answer
    x = 9,817.73

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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.