Home / 15,161.95-20,924.07-8,788.75

Finding the Fourth Proportional to 15,161.95, 20,924.07 and 8,788.75

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Solution

The fourth proportional to 15,161.95, 20,924.07 and 8,788.75 is: 12,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.95 : 20,924.07 = 8,788.75 : x
  2. Step 2: Convert to fraction form
    15,161.95/20,924.07 = 8,788.75/x
  3. Step 3: Cross multiply
    15,161.95x = 20,924.07 × 8,788.75
  4. Step 4: Simplify right side
    15,161.95x = 183,896,420.21
  5. Step 5: Solve for x
    x = 183,896,420.21/15,161.95
  6. Step 6: Final answer
    x = 12,128.81

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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.