Home / 15,255.42-21,053.40-8,541.46

Finding the Fourth Proportional to 15,255.42, 21,053.40 and 8,541.46

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Solution

The fourth proportional to 15,255.42, 21,053.40 and 8,541.46 is: 11,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.42 : 21,053.40 = 8,541.46 : x
  2. Step 2: Convert to fraction form
    15,255.42/21,053.40 = 8,541.46/x
  3. Step 3: Cross multiply
    15,255.42x = 21,053.40 × 8,541.46
  4. Step 4: Simplify right side
    15,255.42x = 179,826,773.96
  5. Step 5: Solve for x
    x = 179,826,773.96/15,255.42
  6. Step 6: Final answer
    x = 11,787.73

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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.