Home / 10,908.99-15,053.85-6,431.76

Finding the Fourth Proportional to 10,908.99, 15,053.85 and 6,431.76

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Solution

The fourth proportional to 10,908.99, 15,053.85 and 6,431.76 is: 8,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.99 : 15,053.85 = 6,431.76 : x
  2. Step 2: Convert to fraction form
    10,908.99/15,053.85 = 6,431.76/x
  3. Step 3: Cross multiply
    10,908.99x = 15,053.85 × 6,431.76
  4. Step 4: Simplify right side
    10,908.99x = 96,822,750.28
  5. Step 5: Solve for x
    x = 96,822,750.28/10,908.99
  6. Step 6: Final answer
    x = 8,875.50

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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.