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Finding the Fourth Proportional to 21,878.01, 32,795.78 and 17,424.81

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Solution

The fourth proportional to 21,878.01, 32,795.78 and 17,424.81 is: 26,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.01 : 32,795.78 = 17,424.81 : x
  2. Step 2: Convert to fraction form
    21,878.01/32,795.78 = 17,424.81/x
  3. Step 3: Cross multiply
    21,878.01x = 32,795.78 × 17,424.81
  4. Step 4: Simplify right side
    21,878.01x = 571,460,148.18
  5. Step 5: Solve for x
    x = 571,460,148.18/21,878.01
  6. Step 6: Final answer
    x = 26,120.30

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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.