Home / 31,543.47-47,313.34-11,820.38

Finding the Fourth Proportional to 31,543.47, 47,313.34 and 11,820.38

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Solution

The fourth proportional to 31,543.47, 47,313.34 and 11,820.38 is: 17,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,543.47 : 47,313.34 = 11,820.38 : x
  2. Step 2: Convert to fraction form
    31,543.47/47,313.34 = 11,820.38/x
  3. Step 3: Cross multiply
    31,543.47x = 47,313.34 × 11,820.38
  4. Step 4: Simplify right side
    31,543.47x = 559,261,657.87
  5. Step 5: Solve for x
    x = 559,261,657.87/31,543.47
  6. Step 6: Final answer
    x = 17,729.87

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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.