Home / 21,952.14-30,285.51-12,515.70

Finding the Fourth Proportional to 21,952.14, 30,285.51 and 12,515.70

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Solution

The fourth proportional to 21,952.14, 30,285.51 and 12,515.70 is: 17,266.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.14 : 30,285.51 = 12,515.70 : x
  2. Step 2: Convert to fraction form
    21,952.14/30,285.51 = 12,515.70/x
  3. Step 3: Cross multiply
    21,952.14x = 30,285.51 × 12,515.70
  4. Step 4: Simplify right side
    21,952.14x = 379,044,357.51
  5. Step 5: Solve for x
    x = 379,044,357.51/21,952.14
  6. Step 6: Final answer
    x = 17,266.85

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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.