Home / 15,871.17-21,897.27-9,155.91

Finding the Fourth Proportional to 15,871.17, 21,897.27 and 9,155.91

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Solution

The fourth proportional to 15,871.17, 21,897.27 and 9,155.91 is: 12,632.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.17 : 21,897.27 = 9,155.91 : x
  2. Step 2: Convert to fraction form
    15,871.17/21,897.27 = 9,155.91/x
  3. Step 3: Cross multiply
    15,871.17x = 21,897.27 × 9,155.91
  4. Step 4: Simplify right side
    15,871.17x = 200,489,433.37
  5. Step 5: Solve for x
    x = 200,489,433.37/15,871.17
  6. Step 6: Final answer
    x = 12,632.30

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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.