Home / 19,830.78-27,366.86-10,877.76

Finding the Fourth Proportional to 19,830.78, 27,366.86 and 10,877.76

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Solution

The fourth proportional to 19,830.78, 27,366.86 and 10,877.76 is: 15,011.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.78 : 27,366.86 = 10,877.76 : x
  2. Step 2: Convert to fraction form
    19,830.78/27,366.86 = 10,877.76/x
  3. Step 3: Cross multiply
    19,830.78x = 27,366.86 × 10,877.76
  4. Step 4: Simplify right side
    19,830.78x = 297,690,135.03
  5. Step 5: Solve for x
    x = 297,690,135.03/19,830.78
  6. Step 6: Final answer
    x = 15,011.52

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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.