Home / 19,870.74-29,806.13-5,079.66

Finding the Fourth Proportional to 19,870.74, 29,806.13 and 5,079.66

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Solution

The fourth proportional to 19,870.74, 29,806.13 and 5,079.66 is: 7,619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.74 : 29,806.13 = 5,079.66 : x
  2. Step 2: Convert to fraction form
    19,870.74/29,806.13 = 5,079.66/x
  3. Step 3: Cross multiply
    19,870.74x = 29,806.13 × 5,079.66
  4. Step 4: Simplify right side
    19,870.74x = 151,404,980.92
  5. Step 5: Solve for x
    x = 151,404,980.92/19,870.74
  6. Step 6: Final answer
    x = 7,619.49

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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.