Home / 10,900.32-15,041.22-6,423.78

Finding the Fourth Proportional to 10,900.32, 15,041.22 and 6,423.78

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Solution

The fourth proportional to 10,900.32, 15,041.22 and 6,423.78 is: 8,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.32 : 15,041.22 = 6,423.78 : x
  2. Step 2: Convert to fraction form
    10,900.32/15,041.22 = 6,423.78/x
  3. Step 3: Cross multiply
    10,900.32x = 15,041.22 × 6,423.78
  4. Step 4: Simplify right side
    10,900.32x = 96,621,488.21
  5. Step 5: Solve for x
    x = 96,621,488.21/10,900.32
  6. Step 6: Final answer
    x = 8,864.10

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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.