Home / 21,812.30-32,721.89-9,332.40

Finding the Fourth Proportional to 21,812.30, 32,721.89 and 9,332.40

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Solution

The fourth proportional to 21,812.30, 32,721.89 and 9,332.40 is: 14,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.30 : 32,721.89 = 9,332.40 : x
  2. Step 2: Convert to fraction form
    21,812.30/32,721.89 = 9,332.40/x
  3. Step 3: Cross multiply
    21,812.30x = 32,721.89 × 9,332.40
  4. Step 4: Simplify right side
    21,812.30x = 305,373,719.57
  5. Step 5: Solve for x
    x = 305,373,719.57/21,812.30
  6. Step 6: Final answer
    x = 14,000.07

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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.