Home / 27,240.68-40,861.02-21,428.12

Finding the Fourth Proportional to 27,240.68, 40,861.02 and 21,428.12

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Solution

The fourth proportional to 27,240.68, 40,861.02 and 21,428.12 is: 32,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,240.68 : 40,861.02 = 21,428.12 : x
  2. Step 2: Convert to fraction form
    27,240.68/40,861.02 = 21,428.12/x
  3. Step 3: Cross multiply
    27,240.68x = 40,861.02 × 21,428.12
  4. Step 4: Simplify right side
    27,240.68x = 875,574,839.88
  5. Step 5: Solve for x
    x = 875,574,839.88/27,240.68
  6. Step 6: Final answer
    x = 32,142.18

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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.