Home / 20,977.03-28,948.93-11,545.59

Finding the Fourth Proportional to 20,977.03, 28,948.93 and 11,545.59

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Solution

The fourth proportional to 20,977.03, 28,948.93 and 11,545.59 is: 15,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.03 : 28,948.93 = 11,545.59 : x
  2. Step 2: Convert to fraction form
    20,977.03/28,948.93 = 11,545.59/x
  3. Step 3: Cross multiply
    20,977.03x = 28,948.93 × 11,545.59
  4. Step 4: Simplify right side
    20,977.03x = 334,232,556.41
  5. Step 5: Solve for x
    x = 334,232,556.41/20,977.03
  6. Step 6: Final answer
    x = 15,933.26

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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.