Home / 10,381.32-14,315.38-6,840.04

Finding the Fourth Proportional to 10,381.32, 14,315.38 and 6,840.04

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Solution

The fourth proportional to 10,381.32, 14,315.38 and 6,840.04 is: 9,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.32 : 14,315.38 = 6,840.04 : x
  2. Step 2: Convert to fraction form
    10,381.32/14,315.38 = 6,840.04/x
  3. Step 3: Cross multiply
    10,381.32x = 14,315.38 × 6,840.04
  4. Step 4: Simplify right side
    10,381.32x = 97,917,771.82
  5. Step 5: Solve for x
    x = 97,917,771.82/10,381.32
  6. Step 6: Final answer
    x = 9,432.11

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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.