Home / 31,275.36-43,159.68-17,128.14

Finding the Fourth Proportional to 31,275.36, 43,159.68 and 17,128.14

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Solution

The fourth proportional to 31,275.36, 43,159.68 and 17,128.14 is: 23,636.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,275.36 : 43,159.68 = 17,128.14 : x
  2. Step 2: Convert to fraction form
    31,275.36/43,159.68 = 17,128.14/x
  3. Step 3: Cross multiply
    31,275.36x = 43,159.68 × 17,128.14
  4. Step 4: Simplify right side
    31,275.36x = 739,245,041.40
  5. Step 5: Solve for x
    x = 739,245,041.40/31,275.36
  6. Step 6: Final answer
    x = 23,636.66

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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.