Home / 28,116.72-38,799.72-15,541.20

Finding the Fourth Proportional to 28,116.72, 38,799.72 and 15,541.20

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Solution

The fourth proportional to 28,116.72, 38,799.72 and 15,541.20 is: 21,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.72 : 38,799.72 = 15,541.20 : x
  2. Step 2: Convert to fraction form
    28,116.72/38,799.72 = 15,541.20/x
  3. Step 3: Cross multiply
    28,116.72x = 38,799.72 × 15,541.20
  4. Step 4: Simplify right side
    28,116.72x = 602,994,208.46
  5. Step 5: Solve for x
    x = 602,994,208.46/28,116.72
  6. Step 6: Final answer
    x = 21,446.11

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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.