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Finding the Fourth Proportional to 21,854.04, 32,781.06 and 7,065.16

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Solution

The fourth proportional to 21,854.04, 32,781.06 and 7,065.16 is: 10,597.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.04 : 32,781.06 = 7,065.16 : x
  2. Step 2: Convert to fraction form
    21,854.04/32,781.06 = 7,065.16/x
  3. Step 3: Cross multiply
    21,854.04x = 32,781.06 × 7,065.16
  4. Step 4: Simplify right side
    21,854.04x = 231,603,433.87
  5. Step 5: Solve for x
    x = 231,603,433.87/21,854.04
  6. Step 6: Final answer
    x = 10,597.74

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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.