Home / 18,689.02-28,028.77-5,538.31

Finding the Fourth Proportional to 18,689.02, 28,028.77 and 5,538.31

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Solution

The fourth proportional to 18,689.02, 28,028.77 and 5,538.31 is: 8,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.02 : 28,028.77 = 5,538.31 : x
  2. Step 2: Convert to fraction form
    18,689.02/28,028.77 = 5,538.31/x
  3. Step 3: Cross multiply
    18,689.02x = 28,028.77 × 5,538.31
  4. Step 4: Simplify right side
    18,689.02x = 155,232,017.18
  5. Step 5: Solve for x
    x = 155,232,017.18/18,689.02
  6. Step 6: Final answer
    x = 8,306.05

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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.