Home / 15,860.04-21,886.10-9,145.86

Finding the Fourth Proportional to 15,860.04, 21,886.10 and 9,145.86

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Solution

The fourth proportional to 15,860.04, 21,886.10 and 9,145.86 is: 12,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.04 : 21,886.10 = 9,145.86 : x
  2. Step 2: Convert to fraction form
    15,860.04/21,886.10 = 9,145.86/x
  3. Step 3: Cross multiply
    15,860.04x = 21,886.10 × 9,145.86
  4. Step 4: Simplify right side
    15,860.04x = 200,167,206.55
  5. Step 5: Solve for x
    x = 200,167,206.55/15,860.04
  6. Step 6: Final answer
    x = 12,620.85

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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.