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Finding the Fourth Proportional to 21,920.54, 32,904.05 and 17,810.16

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Solution

The fourth proportional to 21,920.54, 32,904.05 and 17,810.16 is: 26,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.54 : 32,904.05 = 17,810.16 : x
  2. Step 2: Convert to fraction form
    21,920.54/32,904.05 = 17,810.16/x
  3. Step 3: Cross multiply
    21,920.54x = 32,904.05 × 17,810.16
  4. Step 4: Simplify right side
    21,920.54x = 586,026,306.10
  5. Step 5: Solve for x
    x = 586,026,306.10/21,920.54
  6. Step 6: Final answer
    x = 26,734.12

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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.