Home / 31,617.96-43,612.88-20,275.53

Finding the Fourth Proportional to 31,617.96, 43,612.88 and 20,275.53

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Solution

The fourth proportional to 31,617.96, 43,612.88 and 20,275.53 is: 27,967.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617.96 : 43,612.88 = 20,275.53 : x
  2. Step 2: Convert to fraction form
    31,617.96/43,612.88 = 20,275.53/x
  3. Step 3: Cross multiply
    31,617.96x = 43,612.88 × 20,275.53
  4. Step 4: Simplify right side
    31,617.96x = 884,274,155.45
  5. Step 5: Solve for x
    x = 884,274,155.45/31,617.96
  6. Step 6: Final answer
    x = 27,967.46

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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.