Home / 12,867.16-17,752.10-7,829.80

Finding the Fourth Proportional to 12,867.16, 17,752.10 and 7,829.80

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Solution

The fourth proportional to 12,867.16, 17,752.10 and 7,829.80 is: 10,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.16 : 17,752.10 = 7,829.80 : x
  2. Step 2: Convert to fraction form
    12,867.16/17,752.10 = 7,829.80/x
  3. Step 3: Cross multiply
    12,867.16x = 17,752.10 × 7,829.80
  4. Step 4: Simplify right side
    12,867.16x = 138,995,392.58
  5. Step 5: Solve for x
    x = 138,995,392.58/12,867.16
  6. Step 6: Final answer
    x = 10,802.34

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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.