Home / 35,128.80-48,503.10-21,718.44

Finding the Fourth Proportional to 35,128.80, 48,503.10 and 21,718.44

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Solution

The fourth proportional to 35,128.80, 48,503.10 and 21,718.44 is: 29,987.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,128.80 : 48,503.10 = 21,718.44 : x
  2. Step 2: Convert to fraction form
    35,128.80/48,503.10 = 21,718.44/x
  3. Step 3: Cross multiply
    35,128.80x = 48,503.10 × 21,718.44
  4. Step 4: Simplify right side
    35,128.80x = 1,053,411,667.16
  5. Step 5: Solve for x
    x = 1,053,411,667.16/35,128.80
  6. Step 6: Final answer
    x = 29,987.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.