Home / 21,885.06-32,830.63-7,089.20

Finding the Fourth Proportional to 21,885.06, 32,830.63 and 7,089.20

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Solution

The fourth proportional to 21,885.06, 32,830.63 and 7,089.20 is: 10,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.06 : 32,830.63 = 7,089.20 : x
  2. Step 2: Convert to fraction form
    21,885.06/32,830.63 = 7,089.20/x
  3. Step 3: Cross multiply
    21,885.06x = 32,830.63 × 7,089.20
  4. Step 4: Simplify right side
    21,885.06x = 232,742,720.32
  5. Step 5: Solve for x
    x = 232,742,720.32/21,885.06
  6. Step 6: Final answer
    x = 10,634.78

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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.