Home / 15,345.83-21,176.89-9,377.48

Finding the Fourth Proportional to 15,345.83, 21,176.89 and 9,377.48

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Solution

The fourth proportional to 15,345.83, 21,176.89 and 9,377.48 is: 12,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.83 : 21,176.89 = 9,377.48 : x
  2. Step 2: Convert to fraction form
    15,345.83/21,176.89 = 9,377.48/x
  3. Step 3: Cross multiply
    15,345.83x = 21,176.89 × 9,377.48
  4. Step 4: Simplify right side
    15,345.83x = 198,585,733.11
  5. Step 5: Solve for x
    x = 198,585,733.11/15,345.83
  6. Step 6: Final answer
    x = 12,940.70

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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.