Home / 11,456.18-15,810.84-6,421.76

Finding the Fourth Proportional to 11,456.18, 15,810.84 and 6,421.76

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Solution

The fourth proportional to 11,456.18, 15,810.84 and 6,421.76 is: 8,862.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,456.18 : 15,810.84 = 6,421.76 : x
  2. Step 2: Convert to fraction form
    11,456.18/15,810.84 = 6,421.76/x
  3. Step 3: Cross multiply
    11,456.18x = 15,810.84 × 6,421.76
  4. Step 4: Simplify right side
    11,456.18x = 101,533,419.88
  5. Step 5: Solve for x
    x = 101,533,419.88/11,456.18
  6. Step 6: Final answer
    x = 8,862.76

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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.