Home / 15,306.62-21,120.63-9,018.14

Finding the Fourth Proportional to 15,306.62, 21,120.63 and 9,018.14

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Solution

The fourth proportional to 15,306.62, 21,120.63 and 9,018.14 is: 12,443.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.62 : 21,120.63 = 9,018.14 : x
  2. Step 2: Convert to fraction form
    15,306.62/21,120.63 = 9,018.14/x
  3. Step 3: Cross multiply
    15,306.62x = 21,120.63 × 9,018.14
  4. Step 4: Simplify right side
    15,306.62x = 190,468,798.23
  5. Step 5: Solve for x
    x = 190,468,798.23/15,306.62
  6. Step 6: Final answer
    x = 12,443.56

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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.