Home / 27,622.08-38,117.52-15,685.20

Finding the Fourth Proportional to 27,622.08, 38,117.52 and 15,685.20

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Solution

The fourth proportional to 27,622.08, 38,117.52 and 15,685.20 is: 21,645.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,622.08 : 38,117.52 = 15,685.20 : x
  2. Step 2: Convert to fraction form
    27,622.08/38,117.52 = 15,685.20/x
  3. Step 3: Cross multiply
    27,622.08x = 38,117.52 × 15,685.20
  4. Step 4: Simplify right side
    27,622.08x = 597,880,924.70
  5. Step 5: Solve for x
    x = 597,880,924.70/27,622.08
  6. Step 6: Final answer
    x = 21,645.04

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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.