Home / 21,275.87-31,898.17-10,190.34

Finding the Fourth Proportional to 21,275.87, 31,898.17 and 10,190.34

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Solution

The fourth proportional to 21,275.87, 31,898.17 and 10,190.34 is: 15,278.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.87 : 31,898.17 = 10,190.34 : x
  2. Step 2: Convert to fraction form
    21,275.87/31,898.17 = 10,190.34/x
  3. Step 3: Cross multiply
    21,275.87x = 31,898.17 × 10,190.34
  4. Step 4: Simplify right side
    21,275.87x = 325,053,210.42
  5. Step 5: Solve for x
    x = 325,053,210.42/21,275.87
  6. Step 6: Final answer
    x = 15,278.03

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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.