Home / 22,985.96-31,722.08-12,778.13

Finding the Fourth Proportional to 22,985.96, 31,722.08 and 12,778.13

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Solution

The fourth proportional to 22,985.96, 31,722.08 and 12,778.13 is: 17,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,985.96 : 31,722.08 = 12,778.13 : x
  2. Step 2: Convert to fraction form
    22,985.96/31,722.08 = 12,778.13/x
  3. Step 3: Cross multiply
    22,985.96x = 31,722.08 × 12,778.13
  4. Step 4: Simplify right side
    22,985.96x = 405,348,877.52
  5. Step 5: Solve for x
    x = 405,348,877.52/22,985.96
  6. Step 6: Final answer
    x = 17,634.63

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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.