Home / 20,510.13-30,764.64-5,718.45

Finding the Fourth Proportional to 20,510.13, 30,764.64 and 5,718.45

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Solution

The fourth proportional to 20,510.13, 30,764.64 and 5,718.45 is: 8,577.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.13 : 30,764.64 = 5,718.45 : x
  2. Step 2: Convert to fraction form
    20,510.13/30,764.64 = 5,718.45/x
  3. Step 3: Cross multiply
    20,510.13x = 30,764.64 × 5,718.45
  4. Step 4: Simplify right side
    20,510.13x = 175,926,055.61
  5. Step 5: Solve for x
    x = 175,926,055.61/20,510.13
  6. Step 6: Final answer
    x = 8,577.52

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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.