Home / 15,856.95-21,882.51-8,783.36

Finding the Fourth Proportional to 15,856.95, 21,882.51 and 8,783.36

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Solution

The fourth proportional to 15,856.95, 21,882.51 and 8,783.36 is: 12,120.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.95 : 21,882.51 = 8,783.36 : x
  2. Step 2: Convert to fraction form
    15,856.95/21,882.51 = 8,783.36/x
  3. Step 3: Cross multiply
    15,856.95x = 21,882.51 × 8,783.36
  4. Step 4: Simplify right side
    15,856.95x = 192,201,853.62
  5. Step 5: Solve for x
    x = 192,201,853.62/15,856.95
  6. Step 6: Final answer
    x = 12,120.99

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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.