Home / 31,347.70-47,021.55-18,906.10

Finding the Fourth Proportional to 31,347.70, 47,021.55 and 18,906.10

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Solution

The fourth proportional to 31,347.70, 47,021.55 and 18,906.10 is: 28,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.70 : 47,021.55 = 18,906.10 : x
  2. Step 2: Convert to fraction form
    31,347.70/47,021.55 = 18,906.10/x
  3. Step 3: Cross multiply
    31,347.70x = 47,021.55 × 18,906.10
  4. Step 4: Simplify right side
    31,347.70x = 888,994,126.46
  5. Step 5: Solve for x
    x = 888,994,126.46/31,347.70
  6. Step 6: Final answer
    x = 28,359.15

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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.