Home / 15,875.38-21,909.32-8,801.65

Finding the Fourth Proportional to 15,875.38, 21,909.32 and 8,801.65

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Solution

The fourth proportional to 15,875.38, 21,909.32 and 8,801.65 is: 12,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.38 : 21,909.32 = 8,801.65 : x
  2. Step 2: Convert to fraction form
    15,875.38/21,909.32 = 8,801.65/x
  3. Step 3: Cross multiply
    15,875.38x = 21,909.32 × 8,801.65
  4. Step 4: Simplify right side
    15,875.38x = 192,838,166.38
  5. Step 5: Solve for x
    x = 192,838,166.38/15,875.38
  6. Step 6: Final answer
    x = 12,147.00

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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.