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Finding the Fourth Proportional to 17,969.40, 26,946.72 and 6,279.84

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Solution

The fourth proportional to 17,969.40, 26,946.72 and 6,279.84 is: 9,417.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,969.40 : 26,946.72 = 6,279.84 : x
  2. Step 2: Convert to fraction form
    17,969.40/26,946.72 = 6,279.84/x
  3. Step 3: Cross multiply
    17,969.40x = 26,946.72 × 6,279.84
  4. Step 4: Simplify right side
    17,969.40x = 169,221,090.12
  5. Step 5: Solve for x
    x = 169,221,090.12/17,969.40
  6. Step 6: Final answer
    x = 9,417.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.