Home / 21,019.35-31,528.89-6,228.35

Finding the Fourth Proportional to 21,019.35, 31,528.89 and 6,228.35

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Solution

The fourth proportional to 21,019.35, 31,528.89 and 6,228.35 is: 9,342.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.35 : 31,528.89 = 6,228.35 : x
  2. Step 2: Convert to fraction form
    21,019.35/31,528.89 = 6,228.35/x
  3. Step 3: Cross multiply
    21,019.35x = 31,528.89 × 6,228.35
  4. Step 4: Simplify right side
    21,019.35x = 196,372,804.39
  5. Step 5: Solve for x
    x = 196,372,804.39/21,019.35
  6. Step 6: Final answer
    x = 9,342.48

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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.