Home / 11,124.16-15,350.40-6,407.20

Finding the Fourth Proportional to 11,124.16, 15,350.40 and 6,407.20

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Solution

The fourth proportional to 11,124.16, 15,350.40 and 6,407.20 is: 8,841.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.16 : 15,350.40 = 6,407.20 : x
  2. Step 2: Convert to fraction form
    11,124.16/15,350.40 = 6,407.20/x
  3. Step 3: Cross multiply
    11,124.16x = 15,350.40 × 6,407.20
  4. Step 4: Simplify right side
    11,124.16x = 98,353,082.88
  5. Step 5: Solve for x
    x = 98,353,082.88/11,124.16
  6. Step 6: Final answer
    x = 8,841.39

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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.