Home / 15,320.17-21,144.12-9,355.30

Finding the Fourth Proportional to 15,320.17, 21,144.12 and 9,355.30

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Solution

The fourth proportional to 15,320.17, 21,144.12 and 9,355.30 is: 12,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.17 : 21,144.12 = 9,355.30 : x
  2. Step 2: Convert to fraction form
    15,320.17/21,144.12 = 9,355.30/x
  3. Step 3: Cross multiply
    15,320.17x = 21,144.12 × 9,355.30
  4. Step 4: Simplify right side
    15,320.17x = 197,809,550.52
  5. Step 5: Solve for x
    x = 197,809,550.52/15,320.17
  6. Step 6: Final answer
    x = 12,911.71

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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.