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Finding the Fourth Proportional to 19,866.38, 29,798.89 and 9,330.51

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Solution

The fourth proportional to 19,866.38, 29,798.89 and 9,330.51 is: 13,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.38 : 29,798.89 = 9,330.51 : x
  2. Step 2: Convert to fraction form
    19,866.38/29,798.89 = 9,330.51/x
  3. Step 3: Cross multiply
    19,866.38x = 29,798.89 × 9,330.51
  4. Step 4: Simplify right side
    19,866.38x = 278,038,741.05
  5. Step 5: Solve for x
    x = 278,038,741.05/19,866.38
  6. Step 6: Final answer
    x = 13,995.44

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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.