Home / 15,218.65-21,001.24-8,845.77

Finding the Fourth Proportional to 15,218.65, 21,001.24 and 8,845.77

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Solution

The fourth proportional to 15,218.65, 21,001.24 and 8,845.77 is: 12,206.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.65 : 21,001.24 = 8,845.77 : x
  2. Step 2: Convert to fraction form
    15,218.65/21,001.24 = 8,845.77/x
  3. Step 3: Cross multiply
    15,218.65x = 21,001.24 × 8,845.77
  4. Step 4: Simplify right side
    15,218.65x = 185,772,138.75
  5. Step 5: Solve for x
    x = 185,772,138.75/15,218.65
  6. Step 6: Final answer
    x = 12,206.87

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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.