Home / 19,677.78-27,154.32-10,724.70

Finding the Fourth Proportional to 19,677.78, 27,154.32 and 10,724.70

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Solution

The fourth proportional to 19,677.78, 27,154.32 and 10,724.70 is: 14,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,677.78 : 27,154.32 = 10,724.70 : x
  2. Step 2: Convert to fraction form
    19,677.78/27,154.32 = 10,724.70/x
  3. Step 3: Cross multiply
    19,677.78x = 27,154.32 × 10,724.70
  4. Step 4: Simplify right side
    19,677.78x = 291,221,935.70
  5. Step 5: Solve for x
    x = 291,221,935.70/19,677.78
  6. Step 6: Final answer
    x = 14,799.53

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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.