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Finding the Fourth Proportional to 16,918.40, 23,347.07 and 9,364.74

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Solution

The fourth proportional to 16,918.40, 23,347.07 and 9,364.74 is: 12,923.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.40 : 23,347.07 = 9,364.74 : x
  2. Step 2: Convert to fraction form
    16,918.40/23,347.07 = 9,364.74/x
  3. Step 3: Cross multiply
    16,918.40x = 23,347.07 × 9,364.74
  4. Step 4: Simplify right side
    16,918.40x = 218,639,263.72
  5. Step 5: Solve for x
    x = 218,639,263.72/16,918.40
  6. Step 6: Final answer
    x = 12,923.16

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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.