Home / 21,531.84-32,278.30-7,677.60

Finding the Fourth Proportional to 21,531.84, 32,278.30 and 7,677.60

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Solution

The fourth proportional to 21,531.84, 32,278.30 and 7,677.60 is: 11,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.84 : 32,278.30 = 7,677.60 : x
  2. Step 2: Convert to fraction form
    21,531.84/32,278.30 = 7,677.60/x
  3. Step 3: Cross multiply
    21,531.84x = 32,278.30 × 7,677.60
  4. Step 4: Simplify right side
    21,531.84x = 247,819,876.08
  5. Step 5: Solve for x
    x = 247,819,876.08/21,531.84
  6. Step 6: Final answer
    x = 11,509.46

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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.