Home / 21,046.12-31,528.68-13,151.74

Finding the Fourth Proportional to 21,046.12, 31,528.68 and 13,151.74

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Solution

The fourth proportional to 21,046.12, 31,528.68 and 13,151.74 is: 19,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.12 : 31,528.68 = 13,151.74 : x
  2. Step 2: Convert to fraction form
    21,046.12/31,528.68 = 13,151.74/x
  3. Step 3: Cross multiply
    21,046.12x = 31,528.68 × 13,151.74
  4. Step 4: Simplify right side
    21,046.12x = 414,656,844.26
  5. Step 5: Solve for x
    x = 414,656,844.26/21,046.12
  6. Step 6: Final answer
    x = 19,702.30

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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.