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Finding the Fourth Proportional to 21,595.66, 29,742.42 and 18,610.42

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Solution

The fourth proportional to 21,595.66, 29,742.42 and 18,610.42 is: 25,631.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.66 : 29,742.42 = 18,610.42 : x
  2. Step 2: Convert to fraction form
    21,595.66/29,742.42 = 18,610.42/x
  3. Step 3: Cross multiply
    21,595.66x = 29,742.42 × 18,610.42
  4. Step 4: Simplify right side
    21,595.66x = 553,518,928.02
  5. Step 5: Solve for x
    x = 553,518,928.02/21,595.66
  6. Step 6: Final answer
    x = 25,631.03

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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.