Home / 20,697.83-28,562.18-11,266.40

Finding the Fourth Proportional to 20,697.83, 28,562.18 and 11,266.40

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Solution

The fourth proportional to 20,697.83, 28,562.18 and 11,266.40 is: 15,547.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.83 : 28,562.18 = 11,266.40 : x
  2. Step 2: Convert to fraction form
    20,697.83/28,562.18 = 11,266.40/x
  3. Step 3: Cross multiply
    20,697.83x = 28,562.18 × 11,266.40
  4. Step 4: Simplify right side
    20,697.83x = 321,792,745.61
  5. Step 5: Solve for x
    x = 321,792,745.61/20,697.83
  6. Step 6: Final answer
    x = 15,547.18

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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.