Home / 14,781.49-22,172.40-4,920.75

Finding the Fourth Proportional to 14,781.49, 22,172.40 and 4,920.75

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Solution

The fourth proportional to 14,781.49, 22,172.40 and 4,920.75 is: 7,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.49 : 22,172.40 = 4,920.75 : x
  2. Step 2: Convert to fraction form
    14,781.49/22,172.40 = 4,920.75/x
  3. Step 3: Cross multiply
    14,781.49x = 22,172.40 × 4,920.75
  4. Step 4: Simplify right side
    14,781.49x = 109,104,837.30
  5. Step 5: Solve for x
    x = 109,104,837.30/14,781.49
  6. Step 6: Final answer
    x = 7,381.18

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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.