Home / 15,933.70-21,988.52-8,860.12

Finding the Fourth Proportional to 15,933.70, 21,988.52 and 8,860.12

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Solution

The fourth proportional to 15,933.70, 21,988.52 and 8,860.12 is: 12,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.70 : 21,988.52 = 8,860.12 : x
  2. Step 2: Convert to fraction form
    15,933.70/21,988.52 = 8,860.12/x
  3. Step 3: Cross multiply
    15,933.70x = 21,988.52 × 8,860.12
  4. Step 4: Simplify right side
    15,933.70x = 194,820,925.82
  5. Step 5: Solve for x
    x = 194,820,925.82/15,933.70
  6. Step 6: Final answer
    x = 12,226.97

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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.