Home / 34,135.20-47,108.40-19,989.12

Finding the Fourth Proportional to 34,135.20, 47,108.40 and 19,989.12

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Solution

The fourth proportional to 34,135.20, 47,108.40 and 19,989.12 is: 27,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,135.20 : 47,108.40 = 19,989.12 : x
  2. Step 2: Convert to fraction form
    34,135.20/47,108.40 = 19,989.12/x
  3. Step 3: Cross multiply
    34,135.20x = 47,108.40 × 19,989.12
  4. Step 4: Simplify right side
    34,135.20x = 941,655,460.61
  5. Step 5: Solve for x
    x = 941,655,460.61/34,135.20
  6. Step 6: Final answer
    x = 27,586.05

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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.