Home / 10,899.96-15,041.80-6,423.90

Finding the Fourth Proportional to 10,899.96, 15,041.80 and 6,423.90

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Solution

The fourth proportional to 10,899.96, 15,041.80 and 6,423.90 is: 8,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.96 : 15,041.80 = 6,423.90 : x
  2. Step 2: Convert to fraction form
    10,899.96/15,041.80 = 6,423.90/x
  3. Step 3: Cross multiply
    10,899.96x = 15,041.80 × 6,423.90
  4. Step 4: Simplify right side
    10,899.96x = 96,627,019.02
  5. Step 5: Solve for x
    x = 96,627,019.02/10,899.96
  6. Step 6: Final answer
    x = 8,864.90

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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.