Home / 31,140.40-42,973.86-16,993.48

Finding the Fourth Proportional to 31,140.40, 42,973.86 and 16,993.48

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Solution

The fourth proportional to 31,140.40, 42,973.86 and 16,993.48 is: 23,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.40 : 42,973.86 = 16,993.48 : x
  2. Step 2: Convert to fraction form
    31,140.40/42,973.86 = 16,993.48/x
  3. Step 3: Cross multiply
    31,140.40x = 42,973.86 × 16,993.48
  4. Step 4: Simplify right side
    31,140.40x = 730,275,430.43
  5. Step 5: Solve for x
    x = 730,275,430.43/31,140.40
  6. Step 6: Final answer
    x = 23,451.06

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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.