Home / 31,740.75-43,811.87-18,320.76

Finding the Fourth Proportional to 31,740.75, 43,811.87 and 18,320.76

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Solution

The fourth proportional to 31,740.75, 43,811.87 and 18,320.76 is: 25,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.75 : 43,811.87 = 18,320.76 : x
  2. Step 2: Convert to fraction form
    31,740.75/43,811.87 = 18,320.76/x
  3. Step 3: Cross multiply
    31,740.75x = 43,811.87 × 18,320.76
  4. Step 4: Simplify right side
    31,740.75x = 802,666,663.82
  5. Step 5: Solve for x
    x = 802,666,663.82/31,740.75
  6. Step 6: Final answer
    x = 25,288.21

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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.