Home / 34,871.40-48,122.85-20,721.51

Finding the Fourth Proportional to 34,871.40, 48,122.85 and 20,721.51

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Solution

The fourth proportional to 34,871.40, 48,122.85 and 20,721.51 is: 28,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,871.40 : 48,122.85 = 20,721.51 : x
  2. Step 2: Convert to fraction form
    34,871.40/48,122.85 = 20,721.51/x
  3. Step 3: Cross multiply
    34,871.40x = 48,122.85 × 20,721.51
  4. Step 4: Simplify right side
    34,871.40x = 997,178,117.50
  5. Step 5: Solve for x
    x = 997,178,117.50/34,871.40
  6. Step 6: Final answer
    x = 28,595.87

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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.