Home / 21,727.36-29,981.76-12,294.40

Finding the Fourth Proportional to 21,727.36, 29,981.76 and 12,294.40

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Solution

The fourth proportional to 21,727.36, 29,981.76 and 12,294.40 is: 16,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.36 : 29,981.76 = 12,294.40 : x
  2. Step 2: Convert to fraction form
    21,727.36/29,981.76 = 12,294.40/x
  3. Step 3: Cross multiply
    21,727.36x = 29,981.76 × 12,294.40
  4. Step 4: Simplify right side
    21,727.36x = 368,607,750.14
  5. Step 5: Solve for x
    x = 368,607,750.14/21,727.36
  6. Step 6: Final answer
    x = 16,965.14

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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.