Home / 31,842.74-43,938.08-18,411.40

Finding the Fourth Proportional to 31,842.74, 43,938.08 and 18,411.40

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Solution

The fourth proportional to 31,842.74, 43,938.08 and 18,411.40 is: 25,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842.74 : 43,938.08 = 18,411.40 : x
  2. Step 2: Convert to fraction form
    31,842.74/43,938.08 = 18,411.40/x
  3. Step 3: Cross multiply
    31,842.74x = 43,938.08 × 18,411.40
  4. Step 4: Simplify right side
    31,842.74x = 808,961,566.11
  5. Step 5: Solve for x
    x = 808,961,566.11/31,842.74
  6. Step 6: Final answer
    x = 25,404.90

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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.