Home / 15,871.46-21,901.76-9,156.68

Finding the Fourth Proportional to 15,871.46, 21,901.76 and 9,156.68

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Solution

The fourth proportional to 15,871.46, 21,901.76 and 9,156.68 is: 12,635.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.46 : 21,901.76 = 9,156.68 : x
  2. Step 2: Convert to fraction form
    15,871.46/21,901.76 = 9,156.68/x
  3. Step 3: Cross multiply
    15,871.46x = 21,901.76 × 9,156.68
  4. Step 4: Simplify right side
    15,871.46x = 200,547,407.76
  5. Step 5: Solve for x
    x = 200,547,407.76/15,871.46
  6. Step 6: Final answer
    x = 12,635.73

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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.