Home / 10,877.64-15,011.10-6,401.36

Finding the Fourth Proportional to 10,877.64, 15,011.10 and 6,401.36

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Solution

The fourth proportional to 10,877.64, 15,011.10 and 6,401.36 is: 8,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.64 : 15,011.10 = 6,401.36 : x
  2. Step 2: Convert to fraction form
    10,877.64/15,011.10 = 6,401.36/x
  3. Step 3: Cross multiply
    10,877.64x = 15,011.10 × 6,401.36
  4. Step 4: Simplify right side
    10,877.64x = 96,091,455.10
  5. Step 5: Solve for x
    x = 96,091,455.10/10,877.64
  6. Step 6: Final answer
    x = 8,833.85

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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.