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Finding the Fourth Proportional to 13,068.15, 18,036.90 and 8,036.70

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Solution

The fourth proportional to 13,068.15, 18,036.90 and 8,036.70 is: 11,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,068.15 : 18,036.90 = 8,036.70 : x
  2. Step 2: Convert to fraction form
    13,068.15/18,036.90 = 8,036.70/x
  3. Step 3: Cross multiply
    13,068.15x = 18,036.90 × 8,036.70
  4. Step 4: Simplify right side
    13,068.15x = 144,957,154.23
  5. Step 5: Solve for x
    x = 144,957,154.23/13,068.15
  6. Step 6: Final answer
    x = 11,092.40

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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.