Home / 13,148.46-18,144.95-7,179.77

Finding the Fourth Proportional to 13,148.46, 18,144.95 and 7,179.77

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Solution

The fourth proportional to 13,148.46, 18,144.95 and 7,179.77 is: 9,908.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.46 : 18,144.95 = 7,179.77 : x
  2. Step 2: Convert to fraction form
    13,148.46/18,144.95 = 7,179.77/x
  3. Step 3: Cross multiply
    13,148.46x = 18,144.95 × 7,179.77
  4. Step 4: Simplify right side
    13,148.46x = 130,276,577.13
  5. Step 5: Solve for x
    x = 130,276,577.13/13,148.46
  6. Step 6: Final answer
    x = 9,908.12

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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.