Home / 18,767.52-28,140.64-6,280.80

Finding the Fourth Proportional to 18,767.52, 28,140.64 and 6,280.80

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Solution

The fourth proportional to 18,767.52, 28,140.64 and 6,280.80 is: 9,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.52 : 28,140.64 = 6,280.80 : x
  2. Step 2: Convert to fraction form
    18,767.52/28,140.64 = 6,280.80/x
  3. Step 3: Cross multiply
    18,767.52x = 28,140.64 × 6,280.80
  4. Step 4: Simplify right side
    18,767.52x = 176,745,731.71
  5. Step 5: Solve for x
    x = 176,745,731.71/18,767.52
  6. Step 6: Final answer
    x = 9,417.64

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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.