Home / 21,244.18-31,870.14-8,757.40

Finding the Fourth Proportional to 21,244.18, 31,870.14 and 8,757.40

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Solution

The fourth proportional to 21,244.18, 31,870.14 and 8,757.40 is: 13,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.18 : 31,870.14 = 8,757.40 : x
  2. Step 2: Convert to fraction form
    21,244.18/31,870.14 = 8,757.40/x
  3. Step 3: Cross multiply
    21,244.18x = 31,870.14 × 8,757.40
  4. Step 4: Simplify right side
    21,244.18x = 279,099,564.04
  5. Step 5: Solve for x
    x = 279,099,564.04/21,244.18
  6. Step 6: Final answer
    x = 13,137.70

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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.