Home / 27,854.40-38,442.24-15,280.32

Finding the Fourth Proportional to 27,854.40, 38,442.24 and 15,280.32

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Solution

The fourth proportional to 27,854.40, 38,442.24 and 15,280.32 is: 21,088.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.40 : 38,442.24 = 15,280.32 : x
  2. Step 2: Convert to fraction form
    27,854.40/38,442.24 = 15,280.32/x
  3. Step 3: Cross multiply
    27,854.40x = 38,442.24 × 15,280.32
  4. Step 4: Simplify right side
    27,854.40x = 587,409,728.72
  5. Step 5: Solve for x
    x = 587,409,728.72/27,854.40
  6. Step 6: Final answer
    x = 21,088.58

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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.