Home / 10,781.28-14,886.69-8,812.98

Finding the Fourth Proportional to 10,781.28, 14,886.69 and 8,812.98

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Solution

The fourth proportional to 10,781.28, 14,886.69 and 8,812.98 is: 12,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.28 : 14,886.69 = 8,812.98 : x
  2. Step 2: Convert to fraction form
    10,781.28/14,886.69 = 8,812.98/x
  3. Step 3: Cross multiply
    10,781.28x = 14,886.69 × 8,812.98
  4. Step 4: Simplify right side
    10,781.28x = 131,196,101.24
  5. Step 5: Solve for x
    x = 131,196,101.24/10,781.28
  6. Step 6: Final answer
    x = 12,168.88

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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.