Home / 15,320.91-21,105.15-13,044.93

Finding the Fourth Proportional to 15,320.91, 21,105.15 and 13,044.93

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Solution

The fourth proportional to 15,320.91, 21,105.15 and 13,044.93 is: 17,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.91 : 21,105.15 = 13,044.93 : x
  2. Step 2: Convert to fraction form
    15,320.91/21,105.15 = 13,044.93/x
  3. Step 3: Cross multiply
    15,320.91x = 21,105.15 × 13,044.93
  4. Step 4: Simplify right side
    15,320.91x = 275,315,204.39
  5. Step 5: Solve for x
    x = 275,315,204.39/15,320.91
  6. Step 6: Final answer
    x = 17,969.90

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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.