Home / 21,291.80-31,937.70-14,610.20

Finding the Fourth Proportional to 21,291.80, 31,937.70 and 14,610.20

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Solution

The fourth proportional to 21,291.80, 31,937.70 and 14,610.20 is: 21,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.80 : 31,937.70 = 14,610.20 : x
  2. Step 2: Convert to fraction form
    21,291.80/31,937.70 = 14,610.20/x
  3. Step 3: Cross multiply
    21,291.80x = 31,937.70 × 14,610.20
  4. Step 4: Simplify right side
    21,291.80x = 466,616,184.54
  5. Step 5: Solve for x
    x = 466,616,184.54/21,291.80
  6. Step 6: Final answer
    x = 21,915.30

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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.