Home / 19,768.38-27,280.13-10,815.77

Finding the Fourth Proportional to 19,768.38, 27,280.13 and 10,815.77

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Solution

The fourth proportional to 19,768.38, 27,280.13 and 10,815.77 is: 14,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.38 : 27,280.13 = 10,815.77 : x
  2. Step 2: Convert to fraction form
    19,768.38/27,280.13 = 10,815.77/x
  3. Step 3: Cross multiply
    19,768.38x = 27,280.13 × 10,815.77
  4. Step 4: Simplify right side
    19,768.38x = 295,055,421.17
  5. Step 5: Solve for x
    x = 295,055,421.17/19,768.38
  6. Step 6: Final answer
    x = 14,925.62

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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.