Home / 21,724.91-29,981.04-12,770.77

Finding the Fourth Proportional to 21,724.91, 29,981.04 and 12,770.77

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Solution

The fourth proportional to 21,724.91, 29,981.04 and 12,770.77 is: 17,624.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.91 : 29,981.04 = 12,770.77 : x
  2. Step 2: Convert to fraction form
    21,724.91/29,981.04 = 12,770.77/x
  3. Step 3: Cross multiply
    21,724.91x = 29,981.04 × 12,770.77
  4. Step 4: Simplify right side
    21,724.91x = 382,880,966.20
  5. Step 5: Solve for x
    x = 382,880,966.20/21,724.91
  6. Step 6: Final answer
    x = 17,624.05

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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.