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Finding the Fourth Proportional to 35,279.88, 52,920.36 and 8,985.12

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Solution

The fourth proportional to 35,279.88, 52,920.36 and 8,985.12 is: 13,477.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,279.88 : 52,920.36 = 8,985.12 : x
  2. Step 2: Convert to fraction form
    35,279.88/52,920.36 = 8,985.12/x
  3. Step 3: Cross multiply
    35,279.88x = 52,920.36 × 8,985.12
  4. Step 4: Simplify right side
    35,279.88x = 475,495,785.04
  5. Step 5: Solve for x
    x = 475,495,785.04/35,279.88
  6. Step 6: Final answer
    x = 13,477.82

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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.