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Finding the Fourth Proportional to 14,439, 19,879.50 and 12,575.19

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Solution

The fourth proportional to 14,439, 19,879.50 and 12,575.19 is: 17,313.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,439 : 19,879.50 = 12,575.19 : x
  2. Step 2: Convert to fraction form
    14,439/19,879.50 = 12,575.19/x
  3. Step 3: Cross multiply
    14,439x = 19,879.50 × 12,575.19
  4. Step 4: Simplify right side
    14,439x = 249,988,489.61
  5. Step 5: Solve for x
    x = 249,988,489.61/14,439
  6. Step 6: Final answer
    x = 17,313.42

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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.