Home / 31,012.67-42,799.36-18,274.35

Finding the Fourth Proportional to 31,012.67, 42,799.36 and 18,274.35

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Solution

The fourth proportional to 31,012.67, 42,799.36 and 18,274.35 is: 25,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,012.67 : 42,799.36 = 18,274.35 : x
  2. Step 2: Convert to fraction form
    31,012.67/42,799.36 = 18,274.35/x
  3. Step 3: Cross multiply
    31,012.67x = 42,799.36 × 18,274.35
  4. Step 4: Simplify right side
    31,012.67x = 782,130,484.42
  5. Step 5: Solve for x
    x = 782,130,484.42/31,012.67
  6. Step 6: Final answer
    x = 25,219.71

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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.