Home / 31,469.16-43,428.50-17,129.51

Finding the Fourth Proportional to 31,469.16, 43,428.50 and 17,129.51

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Solution

The fourth proportional to 31,469.16, 43,428.50 and 17,129.51 is: 23,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,469.16 : 43,428.50 = 17,129.51 : x
  2. Step 2: Convert to fraction form
    31,469.16/43,428.50 = 17,129.51/x
  3. Step 3: Cross multiply
    31,469.16x = 43,428.50 × 17,129.51
  4. Step 4: Simplify right side
    31,469.16x = 743,908,925.04
  5. Step 5: Solve for x
    x = 743,908,925.04/31,469.16
  6. Step 6: Final answer
    x = 23,639.30

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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.