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Finding the Fourth Proportional to 14,439, 19,928.88 and 9,907.86

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Solution

The fourth proportional to 14,439, 19,928.88 and 9,907.86 is: 13,674.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,439 : 19,928.88 = 9,907.86 : x
  2. Step 2: Convert to fraction form
    14,439/19,928.88 = 9,907.86/x
  3. Step 3: Cross multiply
    14,439x = 19,928.88 × 9,907.86
  4. Step 4: Simplify right side
    14,439x = 197,452,553.00
  5. Step 5: Solve for x
    x = 197,452,553.00/14,439
  6. Step 6: Final answer
    x = 13,674.95

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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.