Home / 21,622.35-32,421.60-7,578.66

Finding the Fourth Proportional to 21,622.35, 32,421.60 and 7,578.66

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Solution

The fourth proportional to 21,622.35, 32,421.60 and 7,578.66 is: 11,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.35 : 32,421.60 = 7,578.66 : x
  2. Step 2: Convert to fraction form
    21,622.35/32,421.60 = 7,578.66/x
  3. Step 3: Cross multiply
    21,622.35x = 32,421.60 × 7,578.66
  4. Step 4: Simplify right side
    21,622.35x = 245,712,283.06
  5. Step 5: Solve for x
    x = 245,712,283.06/21,622.35
  6. Step 6: Final answer
    x = 11,363.81

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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.