Home / 15,583.95-21,503.97-8,777.79

Finding the Fourth Proportional to 15,583.95, 21,503.97 and 8,777.79

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Solution

The fourth proportional to 15,583.95, 21,503.97 and 8,777.79 is: 12,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.95 : 21,503.97 = 8,777.79 : x
  2. Step 2: Convert to fraction form
    15,583.95/21,503.97 = 8,777.79/x
  3. Step 3: Cross multiply
    15,583.95x = 21,503.97 × 8,777.79
  4. Step 4: Simplify right side
    15,583.95x = 188,757,332.83
  5. Step 5: Solve for x
    x = 188,757,332.83/15,583.95
  6. Step 6: Final answer
    x = 12,112.29

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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.