Home / 20,317.62-28,038.40-11,364.56

Finding the Fourth Proportional to 20,317.62, 28,038.40 and 11,364.56

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Solution

The fourth proportional to 20,317.62, 28,038.40 and 11,364.56 is: 15,683.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.62 : 28,038.40 = 11,364.56 : x
  2. Step 2: Convert to fraction form
    20,317.62/28,038.40 = 11,364.56/x
  3. Step 3: Cross multiply
    20,317.62x = 28,038.40 × 11,364.56
  4. Step 4: Simplify right side
    20,317.62x = 318,644,079.10
  5. Step 5: Solve for x
    x = 318,644,079.10/20,317.62
  6. Step 6: Final answer
    x = 15,683.14

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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.