Home / 10,312.35-14,231.28-6,331.20

Finding the Fourth Proportional to 10,312.35, 14,231.28 and 6,331.20

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Solution

The fourth proportional to 10,312.35, 14,231.28 and 6,331.20 is: 8,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.35 : 14,231.28 = 6,331.20 : x
  2. Step 2: Convert to fraction form
    10,312.35/14,231.28 = 6,331.20/x
  3. Step 3: Cross multiply
    10,312.35x = 14,231.28 × 6,331.20
  4. Step 4: Simplify right side
    10,312.35x = 90,101,079.94
  5. Step 5: Solve for x
    x = 90,101,079.94/10,312.35
  6. Step 6: Final answer
    x = 8,737.20

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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.