Home / 22,615.45-31,208.04-12,543.17

Finding the Fourth Proportional to 22,615.45, 31,208.04 and 12,543.17

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Solution

The fourth proportional to 22,615.45, 31,208.04 and 12,543.17 is: 17,308.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.45 : 31,208.04 = 12,543.17 : x
  2. Step 2: Convert to fraction form
    22,615.45/31,208.04 = 12,543.17/x
  3. Step 3: Cross multiply
    22,615.45x = 31,208.04 × 12,543.17
  4. Step 4: Simplify right side
    22,615.45x = 391,447,595.05
  5. Step 5: Solve for x
    x = 391,447,595.05/22,615.45
  6. Step 6: Final answer
    x = 17,308.86

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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.