Home / 15,651.84-21,618.72-12,671.04

Finding the Fourth Proportional to 15,651.84, 21,618.72 and 12,671.04

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Solution

The fourth proportional to 15,651.84, 21,618.72 and 12,671.04 is: 17,501.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,651.84 : 21,618.72 = 12,671.04 : x
  2. Step 2: Convert to fraction form
    15,651.84/21,618.72 = 12,671.04/x
  3. Step 3: Cross multiply
    15,651.84x = 21,618.72 × 12,671.04
  4. Step 4: Simplify right side
    15,651.84x = 273,931,665.87
  5. Step 5: Solve for x
    x = 273,931,665.87/15,651.84
  6. Step 6: Final answer
    x = 17,501.56

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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.