Home / 22,278.84-30,740.76-12,718.68

Finding the Fourth Proportional to 22,278.84, 30,740.76 and 12,718.68

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Solution

The fourth proportional to 22,278.84, 30,740.76 and 12,718.68 is: 17,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.84 : 30,740.76 = 12,718.68 : x
  2. Step 2: Convert to fraction form
    22,278.84/30,740.76 = 12,718.68/x
  3. Step 3: Cross multiply
    22,278.84x = 30,740.76 × 12,718.68
  4. Step 4: Simplify right side
    22,278.84x = 390,981,889.40
  5. Step 5: Solve for x
    x = 390,981,889.40/22,278.84
  6. Step 6: Final answer
    x = 17,549.47

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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.