Home / 10,899.35-15,042.12-6,424.49

Finding the Fourth Proportional to 10,899.35, 15,042.12 and 6,424.49

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Solution

The fourth proportional to 10,899.35, 15,042.12 and 6,424.49 is: 8,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.35 : 15,042.12 = 6,424.49 : x
  2. Step 2: Convert to fraction form
    10,899.35/15,042.12 = 6,424.49/x
  3. Step 3: Cross multiply
    10,899.35x = 15,042.12 × 6,424.49
  4. Step 4: Simplify right side
    10,899.35x = 96,637,949.52
  5. Step 5: Solve for x
    x = 96,637,949.52/10,899.35
  6. Step 6: Final answer
    x = 8,866.40

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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.