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Finding the Fourth Proportional to 19,698.30, 29,547.84 and 10,988.64

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Solution

The fourth proportional to 19,698.30, 29,547.84 and 10,988.64 is: 16,483.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.30 : 29,547.84 = 10,988.64 : x
  2. Step 2: Convert to fraction form
    19,698.30/29,547.84 = 10,988.64/x
  3. Step 3: Cross multiply
    19,698.30x = 29,547.84 × 10,988.64
  4. Step 4: Simplify right side
    19,698.30x = 324,690,576.54
  5. Step 5: Solve for x
    x = 324,690,576.54/19,698.30
  6. Step 6: Final answer
    x = 16,483.18

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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.