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Finding the Fourth Proportional to 21,817.65, 32,700.01 and 9,955.16

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Solution

The fourth proportional to 21,817.65, 32,700.01 and 9,955.16 is: 14,920.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.65 : 32,700.01 = 9,955.16 : x
  2. Step 2: Convert to fraction form
    21,817.65/32,700.01 = 9,955.16/x
  3. Step 3: Cross multiply
    21,817.65x = 32,700.01 × 9,955.16
  4. Step 4: Simplify right side
    21,817.65x = 325,533,781.78
  5. Step 5: Solve for x
    x = 325,533,781.78/21,817.65
  6. Step 6: Final answer
    x = 14,920.66

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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.