Home / 10,899.77-15,042.11-6,423.30

Finding the Fourth Proportional to 10,899.77, 15,042.11 and 6,423.30

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Solution

The fourth proportional to 10,899.77, 15,042.11 and 6,423.30 is: 8,864.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.77 : 15,042.11 = 6,423.30 : x
  2. Step 2: Convert to fraction form
    10,899.77/15,042.11 = 6,423.30/x
  3. Step 3: Cross multiply
    10,899.77x = 15,042.11 × 6,423.30
  4. Step 4: Simplify right side
    10,899.77x = 96,619,953.05
  5. Step 5: Solve for x
    x = 96,619,953.05/10,899.77
  6. Step 6: Final answer
    x = 8,864.41

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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.