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Finding the Fourth Proportional to 19,208.75, 28,801.71 and 7,513.70

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Solution

The fourth proportional to 19,208.75, 28,801.71 and 7,513.70 is: 11,266.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.75 : 28,801.71 = 7,513.70 : x
  2. Step 2: Convert to fraction form
    19,208.75/28,801.71 = 7,513.70/x
  3. Step 3: Cross multiply
    19,208.75x = 28,801.71 × 7,513.70
  4. Step 4: Simplify right side
    19,208.75x = 216,407,264.42
  5. Step 5: Solve for x
    x = 216,407,264.42/19,208.75
  6. Step 6: Final answer
    x = 11,266.08

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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.