Home / 21,015.32-31,523.58-9,927.23

Finding the Fourth Proportional to 21,015.32, 31,523.58 and 9,927.23

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Solution

The fourth proportional to 21,015.32, 31,523.58 and 9,927.23 is: 14,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.32 : 31,523.58 = 9,927.23 : x
  2. Step 2: Convert to fraction form
    21,015.32/31,523.58 = 9,927.23/x
  3. Step 3: Cross multiply
    21,015.32x = 31,523.58 × 9,927.23
  4. Step 4: Simplify right side
    21,015.32x = 312,941,671.47
  5. Step 5: Solve for x
    x = 312,941,671.47/21,015.32
  6. Step 6: Final answer
    x = 14,891.12

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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.