Home / 13,088.45-18,062.21-7,120.14

Finding the Fourth Proportional to 13,088.45, 18,062.21 and 7,120.14

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Solution

The fourth proportional to 13,088.45, 18,062.21 and 7,120.14 is: 9,825.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.45 : 18,062.21 = 7,120.14 : x
  2. Step 2: Convert to fraction form
    13,088.45/18,062.21 = 7,120.14/x
  3. Step 3: Cross multiply
    13,088.45x = 18,062.21 × 7,120.14
  4. Step 4: Simplify right side
    13,088.45x = 128,605,463.91
  5. Step 5: Solve for x
    x = 128,605,463.91/13,088.45
  6. Step 6: Final answer
    x = 9,825.87

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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.