Home / 12,451.88-17,176.92-7,970.81

Finding the Fourth Proportional to 12,451.88, 17,176.92 and 7,970.81

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Solution

The fourth proportional to 12,451.88, 17,176.92 and 7,970.81 is: 10,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.88 : 17,176.92 = 7,970.81 : x
  2. Step 2: Convert to fraction form
    12,451.88/17,176.92 = 7,970.81/x
  3. Step 3: Cross multiply
    12,451.88x = 17,176.92 × 7,970.81
  4. Step 4: Simplify right side
    12,451.88x = 136,913,965.71
  5. Step 5: Solve for x
    x = 136,913,965.71/12,451.88
  6. Step 6: Final answer
    x = 10,995.45

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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.