Home / 25,430.61-35,072.15-20,116.11

Finding the Fourth Proportional to 25,430.61, 35,072.15 and 20,116.11

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Solution

The fourth proportional to 25,430.61, 35,072.15 and 20,116.11 is: 27,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.61 : 35,072.15 = 20,116.11 : x
  2. Step 2: Convert to fraction form
    25,430.61/35,072.15 = 20,116.11/x
  3. Step 3: Cross multiply
    25,430.61x = 35,072.15 × 20,116.11
  4. Step 4: Simplify right side
    25,430.61x = 705,515,126.76
  5. Step 5: Solve for x
    x = 705,515,126.76/25,430.61
  6. Step 6: Final answer
    x = 27,742.75

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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.