Home / 15,877.05-21,911.63-8,805.75

Finding the Fourth Proportional to 15,877.05, 21,911.63 and 8,805.75

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Solution

The fourth proportional to 15,877.05, 21,911.63 and 8,805.75 is: 12,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.05 : 21,911.63 = 8,805.75 : x
  2. Step 2: Convert to fraction form
    15,877.05/21,911.63 = 8,805.75/x
  3. Step 3: Cross multiply
    15,877.05x = 21,911.63 × 8,805.75
  4. Step 4: Simplify right side
    15,877.05x = 192,948,291.84
  5. Step 5: Solve for x
    x = 192,948,291.84/15,877.05
  6. Step 6: Final answer
    x = 12,152.65

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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.