Home / 11,177.02-15,411.49-7,138.36

Finding the Fourth Proportional to 11,177.02, 15,411.49 and 7,138.36

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Solution

The fourth proportional to 11,177.02, 15,411.49 and 7,138.36 is: 9,842.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.02 : 15,411.49 = 7,138.36 : x
  2. Step 2: Convert to fraction form
    11,177.02/15,411.49 = 7,138.36/x
  3. Step 3: Cross multiply
    11,177.02x = 15,411.49 × 7,138.36
  4. Step 4: Simplify right side
    11,177.02x = 110,012,763.76
  5. Step 5: Solve for x
    x = 110,012,763.76/11,177.02
  6. Step 6: Final answer
    x = 9,842.76

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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.