Home / 20,541.16-28,346.74-11,109.72

Finding the Fourth Proportional to 20,541.16, 28,346.74 and 11,109.72

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Solution

The fourth proportional to 20,541.16, 28,346.74 and 11,109.72 is: 15,331.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.16 : 28,346.74 = 11,109.72 : x
  2. Step 2: Convert to fraction form
    20,541.16/28,346.74 = 11,109.72/x
  3. Step 3: Cross multiply
    20,541.16x = 28,346.74 × 11,109.72
  4. Step 4: Simplify right side
    20,541.16x = 314,924,344.31
  5. Step 5: Solve for x
    x = 314,924,344.31/20,541.16
  6. Step 6: Final answer
    x = 15,331.38

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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.