Home / 12,347.20-17,040.48-7,875.04

Finding the Fourth Proportional to 12,347.20, 17,040.48 and 7,875.04

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Solution

The fourth proportional to 12,347.20, 17,040.48 and 7,875.04 is: 10,868.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.20 : 17,040.48 = 7,875.04 : x
  2. Step 2: Convert to fraction form
    12,347.20/17,040.48 = 7,875.04/x
  3. Step 3: Cross multiply
    12,347.20x = 17,040.48 × 7,875.04
  4. Step 4: Simplify right side
    12,347.20x = 134,194,461.62
  5. Step 5: Solve for x
    x = 134,194,461.62/12,347.20
  6. Step 6: Final answer
    x = 10,868.41

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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.