Home / 21,937.95-32,909.63-7,142.90

Finding the Fourth Proportional to 21,937.95, 32,909.63 and 7,142.90

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Solution

The fourth proportional to 21,937.95, 32,909.63 and 7,142.90 is: 10,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.95 : 32,909.63 = 7,142.90 : x
  2. Step 2: Convert to fraction form
    21,937.95/32,909.63 = 7,142.90/x
  3. Step 3: Cross multiply
    21,937.95x = 32,909.63 × 7,142.90
  4. Step 4: Simplify right side
    21,937.95x = 235,069,995.86
  5. Step 5: Solve for x
    x = 235,069,995.86/21,937.95
  6. Step 6: Final answer
    x = 10,715.22

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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.