Home / 21,297.40-31,952.27-8,815.12

Finding the Fourth Proportional to 21,297.40, 31,952.27 and 8,815.12

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Solution

The fourth proportional to 21,297.40, 31,952.27 and 8,815.12 is: 13,225.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.40 : 31,952.27 = 8,815.12 : x
  2. Step 2: Convert to fraction form
    21,297.40/31,952.27 = 8,815.12/x
  3. Step 3: Cross multiply
    21,297.40x = 31,952.27 × 8,815.12
  4. Step 4: Simplify right side
    21,297.40x = 281,663,094.32
  5. Step 5: Solve for x
    x = 281,663,094.32/21,297.40
  6. Step 6: Final answer
    x = 13,225.23

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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.