Home / 15,363.39-21,200.13-8,556.90

Finding the Fourth Proportional to 15,363.39, 21,200.13 and 8,556.90

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Solution

The fourth proportional to 15,363.39, 21,200.13 and 8,556.90 is: 11,807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.39 : 21,200.13 = 8,556.90 : x
  2. Step 2: Convert to fraction form
    15,363.39/21,200.13 = 8,556.90/x
  3. Step 3: Cross multiply
    15,363.39x = 21,200.13 × 8,556.90
  4. Step 4: Simplify right side
    15,363.39x = 181,407,392.40
  5. Step 5: Solve for x
    x = 181,407,392.40/15,363.39
  6. Step 6: Final answer
    x = 11,807.77

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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.