Home / 11,407.32-15,741.50-6,439

Finding the Fourth Proportional to 11,407.32, 15,741.50 and 6,439

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Solution

The fourth proportional to 11,407.32, 15,741.50 and 6,439 is: 8,885.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,407.32 : 15,741.50 = 6,439 : x
  2. Step 2: Convert to fraction form
    11,407.32/15,741.50 = 6,439/x
  3. Step 3: Cross multiply
    11,407.32x = 15,741.50 × 6,439
  4. Step 4: Simplify right side
    11,407.32x = 101,359,518.50
  5. Step 5: Solve for x
    x = 101,359,518.50/11,407.32
  6. Step 6: Final answer
    x = 8,885.48

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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.