Home / 21,787.40-32,675.43-6,988.70

Finding the Fourth Proportional to 21,787.40, 32,675.43 and 6,988.70

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Solution

The fourth proportional to 21,787.40, 32,675.43 and 6,988.70 is: 10,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.40 : 32,675.43 = 6,988.70 : x
  2. Step 2: Convert to fraction form
    21,787.40/32,675.43 = 6,988.70/x
  3. Step 3: Cross multiply
    21,787.40x = 32,675.43 × 6,988.70
  4. Step 4: Simplify right side
    21,787.40x = 228,358,777.64
  5. Step 5: Solve for x
    x = 228,358,777.64/21,787.40
  6. Step 6: Final answer
    x = 10,481.23

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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.