Home / 21,800.77-30,085.25-12,732.47

Finding the Fourth Proportional to 21,800.77, 30,085.25 and 12,732.47

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Solution

The fourth proportional to 21,800.77, 30,085.25 and 12,732.47 is: 17,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.77 : 30,085.25 = 12,732.47 : x
  2. Step 2: Convert to fraction form
    21,800.77/30,085.25 = 12,732.47/x
  3. Step 3: Cross multiply
    21,800.77x = 30,085.25 × 12,732.47
  4. Step 4: Simplify right side
    21,800.77x = 383,059,543.07
  5. Step 5: Solve for x
    x = 383,059,543.07/21,800.77
  6. Step 6: Final answer
    x = 17,570.92

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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.