Home / 11,139.08-15,373.46-6,423.26

Finding the Fourth Proportional to 11,139.08, 15,373.46 and 6,423.26

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Solution

The fourth proportional to 11,139.08, 15,373.46 and 6,423.26 is: 8,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.08 : 15,373.46 = 6,423.26 : x
  2. Step 2: Convert to fraction form
    11,139.08/15,373.46 = 6,423.26/x
  3. Step 3: Cross multiply
    11,139.08x = 15,373.46 × 6,423.26
  4. Step 4: Simplify right side
    11,139.08x = 98,747,669.87
  5. Step 5: Solve for x
    x = 98,747,669.87/11,139.08
  6. Step 6: Final answer
    x = 8,864.98

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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.