Home / 21,017.93-31,530.20-6,228.32

Finding the Fourth Proportional to 21,017.93, 31,530.20 and 6,228.32

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Solution

The fourth proportional to 21,017.93, 31,530.20 and 6,228.32 is: 9,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.93 : 31,530.20 = 6,228.32 : x
  2. Step 2: Convert to fraction form
    21,017.93/31,530.20 = 6,228.32/x
  3. Step 3: Cross multiply
    21,017.93x = 31,530.20 × 6,228.32
  4. Step 4: Simplify right side
    21,017.93x = 196,379,986.47
  5. Step 5: Solve for x
    x = 196,379,986.47/21,017.93
  6. Step 6: Final answer
    x = 9,343.45

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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.