Home / 15,509.77-21,398.65-8,794.87

Finding the Fourth Proportional to 15,509.77, 21,398.65 and 8,794.87

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Solution

The fourth proportional to 15,509.77, 21,398.65 and 8,794.87 is: 12,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.77 : 21,398.65 = 8,794.87 : x
  2. Step 2: Convert to fraction form
    15,509.77/21,398.65 = 8,794.87/x
  3. Step 3: Cross multiply
    15,509.77x = 21,398.65 × 8,794.87
  4. Step 4: Simplify right side
    15,509.77x = 188,198,344.93
  5. Step 5: Solve for x
    x = 188,198,344.93/15,509.77
  6. Step 6: Final answer
    x = 12,134.18

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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.