Home / 28,261.71-42,387.12-8,535.69

Finding the Fourth Proportional to 28,261.71, 42,387.12 and 8,535.69

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Solution

The fourth proportional to 28,261.71, 42,387.12 and 8,535.69 is: 12,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.71 : 42,387.12 = 8,535.69 : x
  2. Step 2: Convert to fraction form
    28,261.71/42,387.12 = 8,535.69/x
  3. Step 3: Cross multiply
    28,261.71x = 42,387.12 × 8,535.69
  4. Step 4: Simplify right side
    28,261.71x = 361,803,316.31
  5. Step 5: Solve for x
    x = 361,803,316.31/28,261.71
  6. Step 6: Final answer
    x = 12,801.89

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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.