Home / 19,947.12-29,744.64-19,769.40

Finding the Fourth Proportional to 19,947.12, 29,744.64 and 19,769.40

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Solution

The fourth proportional to 19,947.12, 29,744.64 and 19,769.40 is: 29,479.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.12 : 29,744.64 = 19,769.40 : x
  2. Step 2: Convert to fraction form
    19,947.12/29,744.64 = 19,769.40/x
  3. Step 3: Cross multiply
    19,947.12x = 29,744.64 × 19,769.40
  4. Step 4: Simplify right side
    19,947.12x = 588,033,686.02
  5. Step 5: Solve for x
    x = 588,033,686.02/19,947.12
  6. Step 6: Final answer
    x = 29,479.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.