Home / 20,541.12-28,362.96-15,292.32

Finding the Fourth Proportional to 20,541.12, 28,362.96 and 15,292.32

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Solution

The fourth proportional to 20,541.12, 28,362.96 and 15,292.32 is: 21,115.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.12 : 28,362.96 = 15,292.32 : x
  2. Step 2: Convert to fraction form
    20,541.12/28,362.96 = 15,292.32/x
  3. Step 3: Cross multiply
    20,541.12x = 28,362.96 × 15,292.32
  4. Step 4: Simplify right side
    20,541.12x = 433,735,460.47
  5. Step 5: Solve for x
    x = 433,735,460.47/20,541.12
  6. Step 6: Final answer
    x = 21,115.47

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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.