Home / 15,298.61-21,112.11-8,929.58

Finding the Fourth Proportional to 15,298.61, 21,112.11 and 8,929.58

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Solution

The fourth proportional to 15,298.61, 21,112.11 and 8,929.58 is: 12,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298.61 : 21,112.11 = 8,929.58 : x
  2. Step 2: Convert to fraction form
    15,298.61/21,112.11 = 8,929.58/x
  3. Step 3: Cross multiply
    15,298.61x = 21,112.11 × 8,929.58
  4. Step 4: Simplify right side
    15,298.61x = 188,522,169.65
  5. Step 5: Solve for x
    x = 188,522,169.65/15,298.61
  6. Step 6: Final answer
    x = 12,322.83

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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.