Home / 28,307.12-39,103.80-22,679.24

Finding the Fourth Proportional to 28,307.12, 39,103.80 and 22,679.24

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Solution

The fourth proportional to 28,307.12, 39,103.80 and 22,679.24 is: 31,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.12 : 39,103.80 = 22,679.24 : x
  2. Step 2: Convert to fraction form
    28,307.12/39,103.80 = 22,679.24/x
  3. Step 3: Cross multiply
    28,307.12x = 39,103.80 × 22,679.24
  4. Step 4: Simplify right side
    28,307.12x = 886,844,465.11
  5. Step 5: Solve for x
    x = 886,844,465.11/28,307.12
  6. Step 6: Final answer
    x = 31,329.38

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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.