Home / 21,683.18-32,568.48-12,935.18

Finding the Fourth Proportional to 21,683.18, 32,568.48 and 12,935.18

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Solution

The fourth proportional to 21,683.18, 32,568.48 and 12,935.18 is: 19,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.18 : 32,568.48 = 12,935.18 : x
  2. Step 2: Convert to fraction form
    21,683.18/32,568.48 = 12,935.18/x
  3. Step 3: Cross multiply
    21,683.18x = 32,568.48 × 12,935.18
  4. Step 4: Simplify right side
    21,683.18x = 421,279,151.13
  5. Step 5: Solve for x
    x = 421,279,151.13/21,683.18
  6. Step 6: Final answer
    x = 19,428.85

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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.