Home / 31,750.74-43,795.05-20,402.34

Finding the Fourth Proportional to 31,750.74, 43,795.05 and 20,402.34

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Solution

The fourth proportional to 31,750.74, 43,795.05 and 20,402.34 is: 28,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,750.74 : 43,795.05 = 20,402.34 : x
  2. Step 2: Convert to fraction form
    31,750.74/43,795.05 = 20,402.34/x
  3. Step 3: Cross multiply
    31,750.74x = 43,795.05 × 20,402.34
  4. Step 4: Simplify right side
    31,750.74x = 893,521,500.42
  5. Step 5: Solve for x
    x = 893,521,500.42/31,750.74
  6. Step 6: Final answer
    x = 28,141.75

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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.