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Finding the Fourth Proportional to 13,036.60, 17,990.64 and 7,068.31

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Solution

The fourth proportional to 13,036.60, 17,990.64 and 7,068.31 is: 9,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,036.60 : 17,990.64 = 7,068.31 : x
  2. Step 2: Convert to fraction form
    13,036.60/17,990.64 = 7,068.31/x
  3. Step 3: Cross multiply
    13,036.60x = 17,990.64 × 7,068.31
  4. Step 4: Simplify right side
    13,036.60x = 127,163,420.62
  5. Step 5: Solve for x
    x = 127,163,420.62/13,036.60
  6. Step 6: Final answer
    x = 9,754.34

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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.