Home / 21,587.86-32,331.60-20,839.55

Finding the Fourth Proportional to 21,587.86, 32,331.60 and 20,839.55

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Solution

The fourth proportional to 21,587.86, 32,331.60 and 20,839.55 is: 31,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.86 : 32,331.60 = 20,839.55 : x
  2. Step 2: Convert to fraction form
    21,587.86/32,331.60 = 20,839.55/x
  3. Step 3: Cross multiply
    21,587.86x = 32,331.60 × 20,839.55
  4. Step 4: Simplify right side
    21,587.86x = 673,776,075.61
  5. Step 5: Solve for x
    x = 673,776,075.61/21,587.86
  6. Step 6: Final answer
    x = 31,210.88

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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.