Home / 31,431.81-43,376.04-17,285.55

Finding the Fourth Proportional to 31,431.81, 43,376.04 and 17,285.55

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Solution

The fourth proportional to 31,431.81, 43,376.04 and 17,285.55 is: 23,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.81 : 43,376.04 = 17,285.55 : x
  2. Step 2: Convert to fraction form
    31,431.81/43,376.04 = 17,285.55/x
  3. Step 3: Cross multiply
    31,431.81x = 43,376.04 × 17,285.55
  4. Step 4: Simplify right side
    31,431.81x = 749,778,708.22
  5. Step 5: Solve for x
    x = 749,778,708.22/31,431.81
  6. Step 6: Final answer
    x = 23,854.14

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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.