Home / 31,239.65-43,097.03-18,312.38

Finding the Fourth Proportional to 31,239.65, 43,097.03 and 18,312.38

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Solution

The fourth proportional to 31,239.65, 43,097.03 and 18,312.38 is: 25,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,239.65 : 43,097.03 = 18,312.38 : x
  2. Step 2: Convert to fraction form
    31,239.65/43,097.03 = 18,312.38/x
  3. Step 3: Cross multiply
    31,239.65x = 43,097.03 × 18,312.38
  4. Step 4: Simplify right side
    31,239.65x = 789,208,883.18
  5. Step 5: Solve for x
    x = 789,208,883.18/31,239.65
  6. Step 6: Final answer
    x = 25,263.05

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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.