Home / 11,434.22-15,781.47-7,239.50

Finding the Fourth Proportional to 11,434.22, 15,781.47 and 7,239.50

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Solution

The fourth proportional to 11,434.22, 15,781.47 and 7,239.50 is: 9,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,434.22 : 15,781.47 = 7,239.50 : x
  2. Step 2: Convert to fraction form
    11,434.22/15,781.47 = 7,239.50/x
  3. Step 3: Cross multiply
    11,434.22x = 15,781.47 × 7,239.50
  4. Step 4: Simplify right side
    11,434.22x = 114,249,952.07
  5. Step 5: Solve for x
    x = 114,249,952.07/11,434.22
  6. Step 6: Final answer
    x = 9,991.93

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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.