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Finding the Fourth Proportional to 13,036.74, 17,990.62 and 7,068.39

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Solution

The fourth proportional to 13,036.74, 17,990.62 and 7,068.39 is: 9,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,036.74 : 17,990.62 = 7,068.39 : x
  2. Step 2: Convert to fraction form
    13,036.74/17,990.62 = 7,068.39/x
  3. Step 3: Cross multiply
    13,036.74x = 17,990.62 × 7,068.39
  4. Step 4: Simplify right side
    13,036.74x = 127,164,700.83
  5. Step 5: Solve for x
    x = 127,164,700.83/13,036.74
  6. Step 6: Final answer
    x = 9,754.33

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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.