Home / 15,294.42-21,106.52-8,920.84

Finding the Fourth Proportional to 15,294.42, 21,106.52 and 8,920.84

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Solution

The fourth proportional to 15,294.42, 21,106.52 and 8,920.84 is: 12,310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.42 : 21,106.52 = 8,920.84 : x
  2. Step 2: Convert to fraction form
    15,294.42/21,106.52 = 8,920.84/x
  3. Step 3: Cross multiply
    15,294.42x = 21,106.52 × 8,920.84
  4. Step 4: Simplify right side
    15,294.42x = 188,287,887.88
  5. Step 5: Solve for x
    x = 188,287,887.88/15,294.42
  6. Step 6: Final answer
    x = 12,310.89

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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.