Home / 12,432.29-17,158.64-7,955.82

Finding the Fourth Proportional to 12,432.29, 17,158.64 and 7,955.82

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Solution

The fourth proportional to 12,432.29, 17,158.64 and 7,955.82 is: 10,980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.29 : 17,158.64 = 7,955.82 : x
  2. Step 2: Convert to fraction form
    12,432.29/17,158.64 = 7,955.82/x
  3. Step 3: Cross multiply
    12,432.29x = 17,158.64 × 7,955.82
  4. Step 4: Simplify right side
    12,432.29x = 136,511,011.51
  5. Step 5: Solve for x
    x = 136,511,011.51/12,432.29
  6. Step 6: Final answer
    x = 10,980.36

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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.