Home / 20,493.15-28,280.27-11,541.54

Finding the Fourth Proportional to 20,493.15, 28,280.27 and 11,541.54

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Solution

The fourth proportional to 20,493.15, 28,280.27 and 11,541.54 is: 15,927.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.15 : 28,280.27 = 11,541.54 : x
  2. Step 2: Convert to fraction form
    20,493.15/28,280.27 = 11,541.54/x
  3. Step 3: Cross multiply
    20,493.15x = 28,280.27 × 11,541.54
  4. Step 4: Simplify right side
    20,493.15x = 326,397,809.71
  5. Step 5: Solve for x
    x = 326,397,809.71/20,493.15
  6. Step 6: Final answer
    x = 15,927.17

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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.