Home / 21,298.40-31,947.68-7,444.16

Finding the Fourth Proportional to 21,298.40, 31,947.68 and 7,444.16

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Solution

The fourth proportional to 21,298.40, 31,947.68 and 7,444.16 is: 11,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.40 : 31,947.68 = 7,444.16 : x
  2. Step 2: Convert to fraction form
    21,298.40/31,947.68 = 7,444.16/x
  3. Step 3: Cross multiply
    21,298.40x = 31,947.68 × 7,444.16
  4. Step 4: Simplify right side
    21,298.40x = 237,823,641.55
  5. Step 5: Solve for x
    x = 237,823,641.55/21,298.40
  6. Step 6: Final answer
    x = 11,166.27

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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.