Home / 20,248.81-27,942-12,694.84

Finding the Fourth Proportional to 20,248.81, 27,942 and 12,694.84

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Solution

The fourth proportional to 20,248.81, 27,942 and 12,694.84 is: 17,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.81 : 27,942 = 12,694.84 : x
  2. Step 2: Convert to fraction form
    20,248.81/27,942 = 12,694.84/x
  3. Step 3: Cross multiply
    20,248.81x = 27,942 × 12,694.84
  4. Step 4: Simplify right side
    20,248.81x = 354,719,219.28
  5. Step 5: Solve for x
    x = 354,719,219.28/20,248.81
  6. Step 6: Final answer
    x = 17,518.03

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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.