Home / 15,921.95-21,972.92-8,848.22

Finding the Fourth Proportional to 15,921.95, 21,972.92 and 8,848.22

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Solution

The fourth proportional to 15,921.95, 21,972.92 and 8,848.22 is: 12,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.95 : 21,972.92 = 8,848.22 : x
  2. Step 2: Convert to fraction form
    15,921.95/21,972.92 = 8,848.22/x
  3. Step 3: Cross multiply
    15,921.95x = 21,972.92 × 8,848.22
  4. Step 4: Simplify right side
    15,921.95x = 194,421,076.10
  5. Step 5: Solve for x
    x = 194,421,076.10/15,921.95
  6. Step 6: Final answer
    x = 12,210.89

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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.