Home / 13,239.21-19,838.31-10,458.99

Finding the Fourth Proportional to 13,239.21, 19,838.31 and 10,458.99

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Solution

The fourth proportional to 13,239.21, 19,838.31 and 10,458.99 is: 15,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.21 : 19,838.31 = 10,458.99 : x
  2. Step 2: Convert to fraction form
    13,239.21/19,838.31 = 10,458.99/x
  3. Step 3: Cross multiply
    13,239.21x = 19,838.31 × 10,458.99
  4. Step 4: Simplify right side
    13,239.21x = 207,488,685.91
  5. Step 5: Solve for x
    x = 207,488,685.91/13,239.21
  6. Step 6: Final answer
    x = 15,672.29

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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.