Home / 31,147.30-42,938.76-19,202.68

Finding the Fourth Proportional to 31,147.30, 42,938.76 and 19,202.68

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Solution

The fourth proportional to 31,147.30, 42,938.76 and 19,202.68 is: 26,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,147.30 : 42,938.76 = 19,202.68 : x
  2. Step 2: Convert to fraction form
    31,147.30/42,938.76 = 19,202.68/x
  3. Step 3: Cross multiply
    31,147.30x = 42,938.76 × 19,202.68
  4. Step 4: Simplify right side
    31,147.30x = 824,539,267.88
  5. Step 5: Solve for x
    x = 824,539,267.88/31,147.30
  6. Step 6: Final answer
    x = 26,472.25

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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.