Home / 13,622.02-18,799.73-9,155.10

Finding the Fourth Proportional to 13,622.02, 18,799.73 and 9,155.10

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Solution

The fourth proportional to 13,622.02, 18,799.73 and 9,155.10 is: 12,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.02 : 18,799.73 = 9,155.10 : x
  2. Step 2: Convert to fraction form
    13,622.02/18,799.73 = 9,155.10/x
  3. Step 3: Cross multiply
    13,622.02x = 18,799.73 × 9,155.10
  4. Step 4: Simplify right side
    13,622.02x = 172,113,408.12
  5. Step 5: Solve for x
    x = 172,113,408.12/13,622.02
  6. Step 6: Final answer
    x = 12,634.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.