Home / 12,955.95-19,434.24-9,689.78

Finding the Fourth Proportional to 12,955.95, 19,434.24 and 9,689.78

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Solution

The fourth proportional to 12,955.95, 19,434.24 and 9,689.78 is: 14,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.95 : 19,434.24 = 9,689.78 : x
  2. Step 2: Convert to fraction form
    12,955.95/19,434.24 = 9,689.78/x
  3. Step 3: Cross multiply
    12,955.95x = 19,434.24 × 9,689.78
  4. Step 4: Simplify right side
    12,955.95x = 188,313,558.65
  5. Step 5: Solve for x
    x = 188,313,558.65/12,955.95
  6. Step 6: Final answer
    x = 14,534.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.