Home / 74,378.20-111,567.28-18,974.20

Finding the Fourth Proportional to 74,378.20, 111,567.28 and 18,974.20

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Solution

The fourth proportional to 74,378.20, 111,567.28 and 18,974.20 is: 28,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,378.20 : 111,567.28 = 18,974.20 : x
  2. Step 2: Convert to fraction form
    74,378.20/111,567.28 = 18,974.20/x
  3. Step 3: Cross multiply
    74,378.20x = 111,567.28 × 18,974.20
  4. Step 4: Simplify right side
    74,378.20x = 2,116,899,884.18
  5. Step 5: Solve for x
    x = 2,116,899,884.18/74,378.20
  6. Step 6: Final answer
    x = 28,461.29

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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.