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Finding the Fourth Proportional to 18,266.70, 25,208.08 and 9,883.20

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Solution

The fourth proportional to 18,266.70, 25,208.08 and 9,883.20 is: 13,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.70 : 25,208.08 = 9,883.20 : x
  2. Step 2: Convert to fraction form
    18,266.70/25,208.08 = 9,883.20/x
  3. Step 3: Cross multiply
    18,266.70x = 25,208.08 × 9,883.20
  4. Step 4: Simplify right side
    18,266.70x = 249,136,496.26
  5. Step 5: Solve for x
    x = 249,136,496.26/18,266.70
  6. Step 6: Final answer
    x = 13,638.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.