Home / 21,041.28-31,552.68-7,884.43

Finding the Fourth Proportional to 21,041.28, 31,552.68 and 7,884.43

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Solution

The fourth proportional to 21,041.28, 31,552.68 and 7,884.43 is: 11,823.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.28 : 31,552.68 = 7,884.43 : x
  2. Step 2: Convert to fraction form
    21,041.28/31,552.68 = 7,884.43/x
  3. Step 3: Cross multiply
    21,041.28x = 31,552.68 × 7,884.43
  4. Step 4: Simplify right side
    21,041.28x = 248,774,817.89
  5. Step 5: Solve for x
    x = 248,774,817.89/21,041.28
  6. Step 6: Final answer
    x = 11,823.18

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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.