Home / 54,265.41-81,430.11-20,988.18

Finding the Fourth Proportional to 54,265.41, 81,430.11 and 20,988.18

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Solution

The fourth proportional to 54,265.41, 81,430.11 and 20,988.18 is: 31,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,265.41 : 81,430.11 = 20,988.18 : x
  2. Step 2: Convert to fraction form
    54,265.41/81,430.11 = 20,988.18/x
  3. Step 3: Cross multiply
    54,265.41x = 81,430.11 × 20,988.18
  4. Step 4: Simplify right side
    54,265.41x = 1,709,069,806.10
  5. Step 5: Solve for x
    x = 1,709,069,806.10/54,265.41
  6. Step 6: Final answer
    x = 31,494.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.