Home / 15,321.17-21,145.50-9,356.30

Finding the Fourth Proportional to 15,321.17, 21,145.50 and 9,356.30

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Solution

The fourth proportional to 15,321.17, 21,145.50 and 9,356.30 is: 12,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.17 : 21,145.50 = 9,356.30 : x
  2. Step 2: Convert to fraction form
    15,321.17/21,145.50 = 9,356.30/x
  3. Step 3: Cross multiply
    15,321.17x = 21,145.50 × 9,356.30
  4. Step 4: Simplify right side
    15,321.17x = 197,843,641.65
  5. Step 5: Solve for x
    x = 197,843,641.65/15,321.17
  6. Step 6: Final answer
    x = 12,913.09

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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.