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Finding the Fourth Proportional to 19,776.69, 29,667.65 and 7,305.48

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Solution

The fourth proportional to 19,776.69, 29,667.65 and 7,305.48 is: 10,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.69 : 29,667.65 = 7,305.48 : x
  2. Step 2: Convert to fraction form
    19,776.69/29,667.65 = 7,305.48/x
  3. Step 3: Cross multiply
    19,776.69x = 29,667.65 × 7,305.48
  4. Step 4: Simplify right side
    19,776.69x = 216,736,387.19
  5. Step 5: Solve for x
    x = 216,736,387.19/19,776.69
  6. Step 6: Final answer
    x = 10,959.18

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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.