Home / 28,258.24-38,987.36-16,320

Finding the Fourth Proportional to 28,258.24, 38,987.36 and 16,320

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Solution

The fourth proportional to 28,258.24, 38,987.36 and 16,320 is: 22,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.24 : 38,987.36 = 16,320 : x
  2. Step 2: Convert to fraction form
    28,258.24/38,987.36 = 16,320/x
  3. Step 3: Cross multiply
    28,258.24x = 38,987.36 × 16,320
  4. Step 4: Simplify right side
    28,258.24x = 636,273,715.20
  5. Step 5: Solve for x
    x = 636,273,715.20/28,258.24
  6. Step 6: Final answer
    x = 22,516.40

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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.