Home / 18,985.74-28,479.98-5,476.35

Finding the Fourth Proportional to 18,985.74, 28,479.98 and 5,476.35

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Solution

The fourth proportional to 18,985.74, 28,479.98 and 5,476.35 is: 8,214.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.74 : 28,479.98 = 5,476.35 : x
  2. Step 2: Convert to fraction form
    18,985.74/28,479.98 = 5,476.35/x
  3. Step 3: Cross multiply
    18,985.74x = 28,479.98 × 5,476.35
  4. Step 4: Simplify right side
    18,985.74x = 155,966,338.47
  5. Step 5: Solve for x
    x = 155,966,338.47/18,985.74
  6. Step 6: Final answer
    x = 8,214.92

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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.