Home / 16,988.62-25,368.53-13,874.81

Finding the Fourth Proportional to 16,988.62, 25,368.53 and 13,874.81

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Solution

The fourth proportional to 16,988.62, 25,368.53 and 13,874.81 is: 20,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.62 : 25,368.53 = 13,874.81 : x
  2. Step 2: Convert to fraction form
    16,988.62/25,368.53 = 13,874.81/x
  3. Step 3: Cross multiply
    16,988.62x = 25,368.53 × 13,874.81
  4. Step 4: Simplify right side
    16,988.62x = 351,983,533.73
  5. Step 5: Solve for x
    x = 351,983,533.73/16,988.62
  6. Step 6: Final answer
    x = 20,718.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.