Home / 18,807.47-28,212.98-5,298.58

Finding the Fourth Proportional to 18,807.47, 28,212.98 and 5,298.58

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Solution

The fourth proportional to 18,807.47, 28,212.98 and 5,298.58 is: 7,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.47 : 28,212.98 = 5,298.58 : x
  2. Step 2: Convert to fraction form
    18,807.47/28,212.98 = 5,298.58/x
  3. Step 3: Cross multiply
    18,807.47x = 28,212.98 × 5,298.58
  4. Step 4: Simplify right side
    18,807.47x = 149,488,731.57
  5. Step 5: Solve for x
    x = 149,488,731.57/18,807.47
  6. Step 6: Final answer
    x = 7,948.37

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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.