Home / 31,477.80-43,402.50-18,897.96

Finding the Fourth Proportional to 31,477.80, 43,402.50 and 18,897.96

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Solution

The fourth proportional to 31,477.80, 43,402.50 and 18,897.96 is: 26,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,477.80 : 43,402.50 = 18,897.96 : x
  2. Step 2: Convert to fraction form
    31,477.80/43,402.50 = 18,897.96/x
  3. Step 3: Cross multiply
    31,477.80x = 43,402.50 × 18,897.96
  4. Step 4: Simplify right side
    31,477.80x = 820,218,708.90
  5. Step 5: Solve for x
    x = 820,218,708.90/31,477.80
  6. Step 6: Final answer
    x = 26,057.05

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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.