Home / 15,822.72-21,834.70-9,109.04

Finding the Fourth Proportional to 15,822.72, 21,834.70 and 9,109.04

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Solution

The fourth proportional to 15,822.72, 21,834.70 and 9,109.04 is: 12,570.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.72 : 21,834.70 = 9,109.04 : x
  2. Step 2: Convert to fraction form
    15,822.72/21,834.70 = 9,109.04/x
  3. Step 3: Cross multiply
    15,822.72x = 21,834.70 × 9,109.04
  4. Step 4: Simplify right side
    15,822.72x = 198,893,023.74
  5. Step 5: Solve for x
    x = 198,893,023.74/15,822.72
  6. Step 6: Final answer
    x = 12,570.09

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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.