Home / 21,254.08-31,881.12-8,768.74

Finding the Fourth Proportional to 21,254.08, 31,881.12 and 8,768.74

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Solution

The fourth proportional to 21,254.08, 31,881.12 and 8,768.74 is: 13,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.08 : 31,881.12 = 8,768.74 : x
  2. Step 2: Convert to fraction form
    21,254.08/31,881.12 = 8,768.74/x
  3. Step 3: Cross multiply
    21,254.08x = 31,881.12 × 8,768.74
  4. Step 4: Simplify right side
    21,254.08x = 279,557,252.19
  5. Step 5: Solve for x
    x = 279,557,252.19/21,254.08
  6. Step 6: Final answer
    x = 13,153.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.