Home / 11,101.97-15,330.95-7,130.00

Finding the Fourth Proportional to 11,101.97, 15,330.95 and 7,130.00

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Solution

The fourth proportional to 11,101.97, 15,330.95 and 7,130.00 is: 9,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.97 : 15,330.95 = 7,130.00 : x
  2. Step 2: Convert to fraction form
    11,101.97/15,330.95 = 7,130.00/x
  3. Step 3: Cross multiply
    11,101.97x = 15,330.95 × 7,130.00
  4. Step 4: Simplify right side
    11,101.97x = 109,309,734.50
  5. Step 5: Solve for x
    x = 109,309,734.50/11,101.97
  6. Step 6: Final answer
    x = 9,845.97

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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.