Home / 15,017.47-20,723.28-8,302.71

Finding the Fourth Proportional to 15,017.47, 20,723.28 and 8,302.71

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Solution

The fourth proportional to 15,017.47, 20,723.28 and 8,302.71 is: 11,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.47 : 20,723.28 = 8,302.71 : x
  2. Step 2: Convert to fraction form
    15,017.47/20,723.28 = 8,302.71/x
  3. Step 3: Cross multiply
    15,017.47x = 20,723.28 × 8,302.71
  4. Step 4: Simplify right side
    15,017.47x = 172,059,314.10
  5. Step 5: Solve for x
    x = 172,059,314.10/15,017.47
  6. Step 6: Final answer
    x = 11,457.27

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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.