Home / 31,140.44-42,973.80-18,565.19

Finding the Fourth Proportional to 31,140.44, 42,973.80 and 18,565.19

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Solution

The fourth proportional to 31,140.44, 42,973.80 and 18,565.19 is: 25,619.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.44 : 42,973.80 = 18,565.19 : x
  2. Step 2: Convert to fraction form
    31,140.44/42,973.80 = 18,565.19/x
  3. Step 3: Cross multiply
    31,140.44x = 42,973.80 × 18,565.19
  4. Step 4: Simplify right side
    31,140.44x = 797,816,762.02
  5. Step 5: Solve for x
    x = 797,816,762.02/31,140.44
  6. Step 6: Final answer
    x = 25,619.96

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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.