Home / 31,456.76-43,418.84-18,547.29

Finding the Fourth Proportional to 31,456.76, 43,418.84 and 18,547.29

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Solution

The fourth proportional to 31,456.76, 43,418.84 and 18,547.29 is: 25,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,456.76 : 43,418.84 = 18,547.29 : x
  2. Step 2: Convert to fraction form
    31,456.76/43,418.84 = 18,547.29/x
  3. Step 3: Cross multiply
    31,456.76x = 43,418.84 × 18,547.29
  4. Step 4: Simplify right side
    31,456.76x = 805,301,724.21
  5. Step 5: Solve for x
    x = 805,301,724.21/31,456.76
  6. Step 6: Final answer
    x = 25,600.28

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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.