Home / 10,135.62-13,985.28-5,659.20

Finding the Fourth Proportional to 10,135.62, 13,985.28 and 5,659.20

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Solution

The fourth proportional to 10,135.62, 13,985.28 and 5,659.20 is: 7,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.62 : 13,985.28 = 5,659.20 : x
  2. Step 2: Convert to fraction form
    10,135.62/13,985.28 = 5,659.20/x
  3. Step 3: Cross multiply
    10,135.62x = 13,985.28 × 5,659.20
  4. Step 4: Simplify right side
    10,135.62x = 79,145,496.58
  5. Step 5: Solve for x
    x = 79,145,496.58/10,135.62
  6. Step 6: Final answer
    x = 7,808.65

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1.5x scale

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.