Home / 12,359.40-17,021.76-10,680.28

Finding the Fourth Proportional to 12,359.40, 17,021.76 and 10,680.28

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Solution

The fourth proportional to 12,359.40, 17,021.76 and 10,680.28 is: 14,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.40 : 17,021.76 = 10,680.28 : x
  2. Step 2: Convert to fraction form
    12,359.40/17,021.76 = 10,680.28/x
  3. Step 3: Cross multiply
    12,359.40x = 17,021.76 × 10,680.28
  4. Step 4: Simplify right side
    12,359.40x = 181,797,162.89
  5. Step 5: Solve for x
    x = 181,797,162.89/12,359.40
  6. Step 6: Final answer
    x = 14,709.22

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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.