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Finding the Fourth Proportional to 15,141.86, 20,898.27 and 8,853.02

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Solution

The fourth proportional to 15,141.86, 20,898.27 and 8,853.02 is: 12,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.86 : 20,898.27 = 8,853.02 : x
  2. Step 2: Convert to fraction form
    15,141.86/20,898.27 = 8,853.02/x
  3. Step 3: Cross multiply
    15,141.86x = 20,898.27 × 8,853.02
  4. Step 4: Simplify right side
    15,141.86x = 185,012,802.28
  5. Step 5: Solve for x
    x = 185,012,802.28/15,141.86
  6. Step 6: Final answer
    x = 12,218.63

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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.