Home / 13,089.02-18,063.02-7,120.78

Finding the Fourth Proportional to 13,089.02, 18,063.02 and 7,120.78

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Solution

The fourth proportional to 13,089.02, 18,063.02 and 7,120.78 is: 9,826.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.02 : 18,063.02 = 7,120.78 : x
  2. Step 2: Convert to fraction form
    13,089.02/18,063.02 = 7,120.78/x
  3. Step 3: Cross multiply
    13,089.02x = 18,063.02 × 7,120.78
  4. Step 4: Simplify right side
    13,089.02x = 128,622,764.20
  5. Step 5: Solve for x
    x = 128,622,764.20/13,089.02
  6. Step 6: Final answer
    x = 9,826.77

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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.