Home / 15,309.91-21,119.74-10,275.56

Finding the Fourth Proportional to 15,309.91, 21,119.74 and 10,275.56

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Solution

The fourth proportional to 15,309.91, 21,119.74 and 10,275.56 is: 14,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.91 : 21,119.74 = 10,275.56 : x
  2. Step 2: Convert to fraction form
    15,309.91/21,119.74 = 10,275.56/x
  3. Step 3: Cross multiply
    15,309.91x = 21,119.74 × 10,275.56
  4. Step 4: Simplify right side
    15,309.91x = 217,017,103.47
  5. Step 5: Solve for x
    x = 217,017,103.47/15,309.91
  6. Step 6: Final answer
    x = 14,174.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.