Home / 21,106.01-31,660.45-7,065.47

Finding the Fourth Proportional to 21,106.01, 31,660.45 and 7,065.47

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Solution

The fourth proportional to 21,106.01, 31,660.45 and 7,065.47 is: 10,598.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.01 : 31,660.45 = 7,065.47 : x
  2. Step 2: Convert to fraction form
    21,106.01/31,660.45 = 7,065.47/x
  3. Step 3: Cross multiply
    21,106.01x = 31,660.45 × 7,065.47
  4. Step 4: Simplify right side
    21,106.01x = 223,695,959.66
  5. Step 5: Solve for x
    x = 223,695,959.66/21,106.01
  6. Step 6: Final answer
    x = 10,598.69

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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.