Home / 21,008.16-31,492.77-7,850.52

Finding the Fourth Proportional to 21,008.16, 31,492.77 and 7,850.52

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Solution

The fourth proportional to 21,008.16, 31,492.77 and 7,850.52 is: 11,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.16 : 31,492.77 = 7,850.52 : x
  2. Step 2: Convert to fraction form
    21,008.16/31,492.77 = 7,850.52/x
  3. Step 3: Cross multiply
    21,008.16x = 31,492.77 × 7,850.52
  4. Step 4: Simplify right side
    21,008.16x = 247,234,620.74
  5. Step 5: Solve for x
    x = 247,234,620.74/21,008.16
  6. Step 6: Final answer
    x = 11,768.50

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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.