Home / 21,017.13-31,541.85-15,693.60

Finding the Fourth Proportional to 21,017.13, 31,541.85 and 15,693.60

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Solution

The fourth proportional to 21,017.13, 31,541.85 and 15,693.60 is: 23,552.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.13 : 31,541.85 = 15,693.60 : x
  2. Step 2: Convert to fraction form
    21,017.13/31,541.85 = 15,693.60/x
  3. Step 3: Cross multiply
    21,017.13x = 31,541.85 × 15,693.60
  4. Step 4: Simplify right side
    21,017.13x = 495,005,177.16
  5. Step 5: Solve for x
    x = 495,005,177.16/21,017.13
  6. Step 6: Final answer
    x = 23,552.46

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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.