Home / 31,402.50-43,316.22-18,647.02

Finding the Fourth Proportional to 31,402.50, 43,316.22 and 18,647.02

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Solution

The fourth proportional to 31,402.50, 43,316.22 and 18,647.02 is: 25,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,402.50 : 43,316.22 = 18,647.02 : x
  2. Step 2: Convert to fraction form
    31,402.50/43,316.22 = 18,647.02/x
  3. Step 3: Cross multiply
    31,402.50x = 43,316.22 × 18,647.02
  4. Step 4: Simplify right side
    31,402.50x = 807,718,420.66
  5. Step 5: Solve for x
    x = 807,718,420.66/31,402.50
  6. Step 6: Final answer
    x = 25,721.47

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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.