Home / 31,800.23-43,884.48-19,870.49

Finding the Fourth Proportional to 31,800.23, 43,884.48 and 19,870.49

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Solution

The fourth proportional to 31,800.23, 43,884.48 and 19,870.49 is: 27,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.23 : 43,884.48 = 19,870.49 : x
  2. Step 2: Convert to fraction form
    31,800.23/43,884.48 = 19,870.49/x
  3. Step 3: Cross multiply
    31,800.23x = 43,884.48 × 19,870.49
  4. Step 4: Simplify right side
    31,800.23x = 872,005,901.57
  5. Step 5: Solve for x
    x = 872,005,901.57/31,800.23
  6. Step 6: Final answer
    x = 27,421.38

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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.