Home / 13,538.90-20,307.43-4,772.68

Finding the Fourth Proportional to 13,538.90, 20,307.43 and 4,772.68

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Solution

The fourth proportional to 13,538.90, 20,307.43 and 4,772.68 is: 7,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.90 : 20,307.43 = 4,772.68 : x
  2. Step 2: Convert to fraction form
    13,538.90/20,307.43 = 4,772.68/x
  3. Step 3: Cross multiply
    13,538.90x = 20,307.43 × 4,772.68
  4. Step 4: Simplify right side
    13,538.90x = 96,920,865.01
  5. Step 5: Solve for x
    x = 96,920,865.01/13,538.90
  6. Step 6: Final answer
    x = 7,158.70

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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.