Home / 13,622.02-18,799.75-9,155.07

Finding the Fourth Proportional to 13,622.02, 18,799.75 and 9,155.07

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Solution

The fourth proportional to 13,622.02, 18,799.75 and 9,155.07 is: 12,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.02 : 18,799.75 = 9,155.07 : x
  2. Step 2: Convert to fraction form
    13,622.02/18,799.75 = 9,155.07/x
  3. Step 3: Cross multiply
    13,622.02x = 18,799.75 × 9,155.07
  4. Step 4: Simplify right side
    13,622.02x = 172,113,027.23
  5. Step 5: Solve for x
    x = 172,113,027.23/13,622.02
  6. Step 6: Final answer
    x = 12,634.91

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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.