Home / 38,396.10-52,987.15-21,399.87

Finding the Fourth Proportional to 38,396.10, 52,987.15 and 21,399.87

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Solution

The fourth proportional to 38,396.10, 52,987.15 and 21,399.87 is: 29,532.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,396.10 : 52,987.15 = 21,399.87 : x
  2. Step 2: Convert to fraction form
    38,396.10/52,987.15 = 21,399.87/x
  3. Step 3: Cross multiply
    38,396.10x = 52,987.15 × 21,399.87
  4. Step 4: Simplify right side
    38,396.10x = 1,133,918,014.67
  5. Step 5: Solve for x
    x = 1,133,918,014.67/38,396.10
  6. Step 6: Final answer
    x = 29,532.11

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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.