Home / 10,921.18-15,071.77-6,142.63

Finding the Fourth Proportional to 10,921.18, 15,071.77 and 6,142.63

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Solution

The fourth proportional to 10,921.18, 15,071.77 and 6,142.63 is: 8,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.18 : 15,071.77 = 6,142.63 : x
  2. Step 2: Convert to fraction form
    10,921.18/15,071.77 = 6,142.63/x
  3. Step 3: Cross multiply
    10,921.18x = 15,071.77 × 6,142.63
  4. Step 4: Simplify right side
    10,921.18x = 92,580,306.56
  5. Step 5: Solve for x
    x = 92,580,306.56/10,921.18
  6. Step 6: Final answer
    x = 8,477.13

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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.