Home / 21,985.32-32,985.04-7,190.87

Finding the Fourth Proportional to 21,985.32, 32,985.04 and 7,190.87

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Solution

The fourth proportional to 21,985.32, 32,985.04 and 7,190.87 is: 10,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.32 : 32,985.04 = 7,190.87 : x
  2. Step 2: Convert to fraction form
    21,985.32/32,985.04 = 7,190.87/x
  3. Step 3: Cross multiply
    21,985.32x = 32,985.04 × 7,190.87
  4. Step 4: Simplify right side
    21,985.32x = 237,191,134.58
  5. Step 5: Solve for x
    x = 237,191,134.58/21,985.32
  6. Step 6: Final answer
    x = 10,788.61

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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.