Home / 15,860.08-21,886.90-9,145.61

Finding the Fourth Proportional to 15,860.08, 21,886.90 and 9,145.61

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Solution

The fourth proportional to 15,860.08, 21,886.90 and 9,145.61 is: 12,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.08 : 21,886.90 = 9,145.61 : x
  2. Step 2: Convert to fraction form
    15,860.08/21,886.90 = 9,145.61/x
  3. Step 3: Cross multiply
    15,860.08x = 21,886.90 × 9,145.61
  4. Step 4: Simplify right side
    15,860.08x = 200,169,114.29
  5. Step 5: Solve for x
    x = 200,169,114.29/15,860.08
  6. Step 6: Final answer
    x = 12,620.94

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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.