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Finding the Fourth Proportional to 21,869.03, 32,804.56 and 7,079.11

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Solution

The fourth proportional to 21,869.03, 32,804.56 and 7,079.11 is: 10,618.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.03 : 32,804.56 = 7,079.11 : x
  2. Step 2: Convert to fraction form
    21,869.03/32,804.56 = 7,079.11/x
  3. Step 3: Cross multiply
    21,869.03x = 32,804.56 × 7,079.11
  4. Step 4: Simplify right side
    21,869.03x = 232,227,088.74
  5. Step 5: Solve for x
    x = 232,227,088.74/21,869.03
  6. Step 6: Final answer
    x = 10,618.99

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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.