Home / 20,378.99-30,569.40-5,587.58

Finding the Fourth Proportional to 20,378.99, 30,569.40 and 5,587.58

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Solution

The fourth proportional to 20,378.99, 30,569.40 and 5,587.58 is: 8,381.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.99 : 30,569.40 = 5,587.58 : x
  2. Step 2: Convert to fraction form
    20,378.99/30,569.40 = 5,587.58/x
  3. Step 3: Cross multiply
    20,378.99x = 30,569.40 × 5,587.58
  4. Step 4: Simplify right side
    20,378.99x = 170,809,044.48
  5. Step 5: Solve for x
    x = 170,809,044.48/20,378.99
  6. Step 6: Final answer
    x = 8,381.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.