Home / 20,280.61-30,422.13-9,752.77

Finding the Fourth Proportional to 20,280.61, 30,422.13 and 9,752.77

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Solution

The fourth proportional to 20,280.61, 30,422.13 and 9,752.77 is: 14,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.61 : 30,422.13 = 9,752.77 : x
  2. Step 2: Convert to fraction form
    20,280.61/30,422.13 = 9,752.77/x
  3. Step 3: Cross multiply
    20,280.61x = 30,422.13 × 9,752.77
  4. Step 4: Simplify right side
    20,280.61x = 296,700,036.80
  5. Step 5: Solve for x
    x = 296,700,036.80/20,280.61
  6. Step 6: Final answer
    x = 14,629.74

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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.