Home / 31,989.89-47,985.11-12,263.76

Finding the Fourth Proportional to 31,989.89, 47,985.11 and 12,263.76

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Solution

The fourth proportional to 31,989.89, 47,985.11 and 12,263.76 is: 18,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.89 : 47,985.11 = 12,263.76 : x
  2. Step 2: Convert to fraction form
    31,989.89/47,985.11 = 12,263.76/x
  3. Step 3: Cross multiply
    31,989.89x = 47,985.11 × 12,263.76
  4. Step 4: Simplify right side
    31,989.89x = 588,477,811.29
  5. Step 5: Solve for x
    x = 588,477,811.29/31,989.89
  6. Step 6: Final answer
    x = 18,395.75

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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.