Home / 27,690.83-38,212.84-15,753.90

Finding the Fourth Proportional to 27,690.83, 38,212.84 and 15,753.90

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Solution

The fourth proportional to 27,690.83, 38,212.84 and 15,753.90 is: 21,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.83 : 38,212.84 = 15,753.90 : x
  2. Step 2: Convert to fraction form
    27,690.83/38,212.84 = 15,753.90/x
  3. Step 3: Cross multiply
    27,690.83x = 38,212.84 × 15,753.90
  4. Step 4: Simplify right side
    27,690.83x = 602,001,423.07
  5. Step 5: Solve for x
    x = 602,001,423.07/27,690.83
  6. Step 6: Final answer
    x = 21,740.10

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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.