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Finding the Fourth Proportional to 18,283.25, 25,230.93 and 9,899.75

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Solution

The fourth proportional to 18,283.25, 25,230.93 and 9,899.75 is: 13,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.25 : 25,230.93 = 9,899.75 : x
  2. Step 2: Convert to fraction form
    18,283.25/25,230.93 = 9,899.75/x
  3. Step 3: Cross multiply
    18,283.25x = 25,230.93 × 9,899.75
  4. Step 4: Simplify right side
    18,283.25x = 249,779,925.22
  5. Step 5: Solve for x
    x = 249,779,925.22/18,283.25
  6. Step 6: Final answer
    x = 13,661.68

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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.