Home / 15,116.67-20,858.51-8,402.11

Finding the Fourth Proportional to 15,116.67, 20,858.51 and 8,402.11

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Solution

The fourth proportional to 15,116.67, 20,858.51 and 8,402.11 is: 11,593.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.67 : 20,858.51 = 8,402.11 : x
  2. Step 2: Convert to fraction form
    15,116.67/20,858.51 = 8,402.11/x
  3. Step 3: Cross multiply
    15,116.67x = 20,858.51 × 8,402.11
  4. Step 4: Simplify right side
    15,116.67x = 175,255,464.32
  5. Step 5: Solve for x
    x = 175,255,464.32/15,116.67
  6. Step 6: Final answer
    x = 11,593.52

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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.