Home / 15,318.83-21,148.40-9,270.20

Finding the Fourth Proportional to 15,318.83, 21,148.40 and 9,270.20

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Solution

The fourth proportional to 15,318.83, 21,148.40 and 9,270.20 is: 12,797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.83 : 21,148.40 = 9,270.20 : x
  2. Step 2: Convert to fraction form
    15,318.83/21,148.40 = 9,270.20/x
  3. Step 3: Cross multiply
    15,318.83x = 21,148.40 × 9,270.20
  4. Step 4: Simplify right side
    15,318.83x = 196,049,897.68
  5. Step 5: Solve for x
    x = 196,049,897.68/15,318.83
  6. Step 6: Final answer
    x = 12,797.97

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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.