Home / 22,675.68-31,307.70-20,278.20

Finding the Fourth Proportional to 22,675.68, 31,307.70 and 20,278.20

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Solution

The fourth proportional to 22,675.68, 31,307.70 and 20,278.20 is: 27,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,675.68 : 31,307.70 = 20,278.20 : x
  2. Step 2: Convert to fraction form
    22,675.68/31,307.70 = 20,278.20/x
  3. Step 3: Cross multiply
    22,675.68x = 31,307.70 × 20,278.20
  4. Step 4: Simplify right side
    22,675.68x = 634,863,802.14
  5. Step 5: Solve for x
    x = 634,863,802.14/22,675.68
  6. Step 6: Final answer
    x = 27,997.56

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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.