Home / 15,418.95-21,277.72-8,612.79

Finding the Fourth Proportional to 15,418.95, 21,277.72 and 8,612.79

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Solution

The fourth proportional to 15,418.95, 21,277.72 and 8,612.79 is: 11,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.95 : 21,277.72 = 8,612.79 : x
  2. Step 2: Convert to fraction form
    15,418.95/21,277.72 = 8,612.79/x
  3. Step 3: Cross multiply
    15,418.95x = 21,277.72 × 8,612.79
  4. Step 4: Simplify right side
    15,418.95x = 183,260,384.59
  5. Step 5: Solve for x
    x = 183,260,384.59/15,418.95
  6. Step 6: Final answer
    x = 11,885.40

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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.