Home / 19,766.64-27,278.88-10,815.12

Finding the Fourth Proportional to 19,766.64, 27,278.88 and 10,815.12

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Solution

The fourth proportional to 19,766.64, 27,278.88 and 10,815.12 is: 14,925.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.64 : 27,278.88 = 10,815.12 : x
  2. Step 2: Convert to fraction form
    19,766.64/27,278.88 = 10,815.12/x
  3. Step 3: Cross multiply
    19,766.64x = 27,278.88 × 10,815.12
  4. Step 4: Simplify right side
    19,766.64x = 295,024,360.67
  5. Step 5: Solve for x
    x = 295,024,360.67/19,766.64
  6. Step 6: Final answer
    x = 14,925.37

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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.