Home / 12,307.20-16,977.28-7,338.24

Finding the Fourth Proportional to 12,307.20, 16,977.28 and 7,338.24

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Solution

The fourth proportional to 12,307.20, 16,977.28 and 7,338.24 is: 10,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.20 : 16,977.28 = 7,338.24 : x
  2. Step 2: Convert to fraction form
    12,307.20/16,977.28 = 7,338.24/x
  3. Step 3: Cross multiply
    12,307.20x = 16,977.28 × 7,338.24
  4. Step 4: Simplify right side
    12,307.20x = 124,583,355.19
  5. Step 5: Solve for x
    x = 124,583,355.19/12,307.20
  6. Step 6: Final answer
    x = 10,122.80

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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.