Home / 21,184.07-31,785.08-10,648.54

Finding the Fourth Proportional to 21,184.07, 31,785.08 and 10,648.54

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Solution

The fourth proportional to 21,184.07, 31,785.08 and 10,648.54 is: 15,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.07 : 31,785.08 = 10,648.54 : x
  2. Step 2: Convert to fraction form
    21,184.07/31,785.08 = 10,648.54/x
  3. Step 3: Cross multiply
    21,184.07x = 31,785.08 × 10,648.54
  4. Step 4: Simplify right side
    21,184.07x = 338,464,695.78
  5. Step 5: Solve for x
    x = 338,464,695.78/21,184.07
  6. Step 6: Final answer
    x = 15,977.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.