Home / 23,060.56-31,821.20-12,987.40

Finding the Fourth Proportional to 23,060.56, 31,821.20 and 12,987.40

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Solution

The fourth proportional to 23,060.56, 31,821.20 and 12,987.40 is: 17,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,060.56 : 31,821.20 = 12,987.40 : x
  2. Step 2: Convert to fraction form
    23,060.56/31,821.20 = 12,987.40/x
  3. Step 3: Cross multiply
    23,060.56x = 31,821.20 × 12,987.40
  4. Step 4: Simplify right side
    23,060.56x = 413,274,652.88
  5. Step 5: Solve for x
    x = 413,274,652.88/23,060.56
  6. Step 6: Final answer
    x = 17,921.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.