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Finding the Fourth Proportional to 17,988.78, 26,988.44 and 9,229.80

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Solution

The fourth proportional to 17,988.78, 26,988.44 and 9,229.80 is: 13,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.78 : 26,988.44 = 9,229.80 : x
  2. Step 2: Convert to fraction form
    17,988.78/26,988.44 = 9,229.80/x
  3. Step 3: Cross multiply
    17,988.78x = 26,988.44 × 9,229.80
  4. Step 4: Simplify right side
    17,988.78x = 249,097,903.51
  5. Step 5: Solve for x
    x = 249,097,903.51/17,988.78
  6. Step 6: Final answer
    x = 13,847.40

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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.