Home / 47,991.95-71,989.61-12,932.45

Finding the Fourth Proportional to 47,991.95, 71,989.61 and 12,932.45

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Solution

The fourth proportional to 47,991.95, 71,989.61 and 12,932.45 is: 19,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.95 : 71,989.61 = 12,932.45 : x
  2. Step 2: Convert to fraction form
    47,991.95/71,989.61 = 12,932.45/x
  3. Step 3: Cross multiply
    47,991.95x = 71,989.61 × 12,932.45
  4. Step 4: Simplify right side
    47,991.95x = 931,001,607.23
  5. Step 5: Solve for x
    x = 931,001,607.23/47,991.95
  6. Step 6: Final answer
    x = 19,399.12

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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.