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Finding the Fourth Proportional to 22,470.08, 31,010.13 and 12,913.03

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Solution

The fourth proportional to 22,470.08, 31,010.13 and 12,913.03 is: 17,820.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,470.08 : 31,010.13 = 12,913.03 : x
  2. Step 2: Convert to fraction form
    22,470.08/31,010.13 = 12,913.03/x
  3. Step 3: Cross multiply
    22,470.08x = 31,010.13 × 12,913.03
  4. Step 4: Simplify right side
    22,470.08x = 400,434,661.47
  5. Step 5: Solve for x
    x = 400,434,661.47/22,470.08
  6. Step 6: Final answer
    x = 17,820.79

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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.