Home / 10,005.40-15,006.78-2,610.36

Finding the Fourth Proportional to 10,005.40, 15,006.78 and 2,610.36

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Solution

The fourth proportional to 10,005.40, 15,006.78 and 2,610.36 is: 3,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.40 : 15,006.78 = 2,610.36 : x
  2. Step 2: Convert to fraction form
    10,005.40/15,006.78 = 2,610.36/x
  3. Step 3: Cross multiply
    10,005.40x = 15,006.78 × 2,610.36
  4. Step 4: Simplify right side
    10,005.40x = 39,173,098.24
  5. Step 5: Solve for x
    x = 39,173,098.24/10,005.40
  6. Step 6: Final answer
    x = 3,915.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.