Home / 21,295.76-31,929.90-10,202.18

Finding the Fourth Proportional to 21,295.76, 31,929.90 and 10,202.18

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Solution

The fourth proportional to 21,295.76, 31,929.90 and 10,202.18 is: 15,296.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.76 : 31,929.90 = 10,202.18 : x
  2. Step 2: Convert to fraction form
    21,295.76/31,929.90 = 10,202.18/x
  3. Step 3: Cross multiply
    21,295.76x = 31,929.90 × 10,202.18
  4. Step 4: Simplify right side
    21,295.76x = 325,754,587.18
  5. Step 5: Solve for x
    x = 325,754,587.18/21,295.76
  6. Step 6: Final answer
    x = 15,296.69

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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.