Home / 12,307.77-16,986-7,530.90

Finding the Fourth Proportional to 12,307.77, 16,986 and 7,530.90

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Solution

The fourth proportional to 12,307.77, 16,986 and 7,530.90 is: 10,393.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.77 : 16,986 = 7,530.90 : x
  2. Step 2: Convert to fraction form
    12,307.77/16,986 = 7,530.90/x
  3. Step 3: Cross multiply
    12,307.77x = 16,986 × 7,530.90
  4. Step 4: Simplify right side
    12,307.77x = 127,919,867.40
  5. Step 5: Solve for x
    x = 127,919,867.40/12,307.77
  6. Step 6: Final answer
    x = 10,393.42

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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.