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Finding the Fourth Proportional to 14,987.96, 20,667.96 and 9,950.36

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Solution

The fourth proportional to 14,987.96, 20,667.96 and 9,950.36 is: 13,721.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.96 : 20,667.96 = 9,950.36 : x
  2. Step 2: Convert to fraction form
    14,987.96/20,667.96 = 9,950.36/x
  3. Step 3: Cross multiply
    14,987.96x = 20,667.96 × 9,950.36
  4. Step 4: Simplify right side
    14,987.96x = 205,653,642.47
  5. Step 5: Solve for x
    x = 205,653,642.47/14,987.96
  6. Step 6: Final answer
    x = 13,721.26

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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.