Home / 31,290.10-43,172.90-19,025.13

Finding the Fourth Proportional to 31,290.10, 43,172.90 and 19,025.13

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Solution

The fourth proportional to 31,290.10, 43,172.90 and 19,025.13 is: 26,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.10 : 43,172.90 = 19,025.13 : x
  2. Step 2: Convert to fraction form
    31,290.10/43,172.90 = 19,025.13/x
  3. Step 3: Cross multiply
    31,290.10x = 43,172.90 × 19,025.13
  4. Step 4: Simplify right side
    31,290.10x = 821,369,930.25
  5. Step 5: Solve for x
    x = 821,369,930.25/31,290.10
  6. Step 6: Final answer
    x = 26,250.16

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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.