Home / 21,018.09-31,531.74-6,228.16

Finding the Fourth Proportional to 21,018.09, 31,531.74 and 6,228.16

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Solution

The fourth proportional to 21,018.09, 31,531.74 and 6,228.16 is: 9,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.09 : 31,531.74 = 6,228.16 : x
  2. Step 2: Convert to fraction form
    21,018.09/31,531.74 = 6,228.16/x
  3. Step 3: Cross multiply
    21,018.09x = 31,531.74 × 6,228.16
  4. Step 4: Simplify right side
    21,018.09x = 196,384,721.80
  5. Step 5: Solve for x
    x = 196,384,721.80/21,018.09
  6. Step 6: Final answer
    x = 9,343.60

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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.