Home / 21,432.66-32,018.63-13,874.64

Finding the Fourth Proportional to 21,432.66, 32,018.63 and 13,874.64

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Solution

The fourth proportional to 21,432.66, 32,018.63 and 13,874.64 is: 20,727.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.66 : 32,018.63 = 13,874.64 : x
  2. Step 2: Convert to fraction form
    21,432.66/32,018.63 = 13,874.64/x
  3. Step 3: Cross multiply
    21,432.66x = 32,018.63 × 13,874.64
  4. Step 4: Simplify right side
    21,432.66x = 444,246,999.23
  5. Step 5: Solve for x
    x = 444,246,999.23/21,432.66
  6. Step 6: Final answer
    x = 20,727.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.