Home / 28,307.50-39,104.32-22,679.62

Finding the Fourth Proportional to 28,307.50, 39,104.32 and 22,679.62

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Solution

The fourth proportional to 28,307.50, 39,104.32 and 22,679.62 is: 31,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.50 : 39,104.32 = 22,679.62 : x
  2. Step 2: Convert to fraction form
    28,307.50/39,104.32 = 22,679.62/x
  3. Step 3: Cross multiply
    28,307.50x = 39,104.32 × 22,679.62
  4. Step 4: Simplify right side
    28,307.50x = 886,871,117.96
  5. Step 5: Solve for x
    x = 886,871,117.96/28,307.50
  6. Step 6: Final answer
    x = 31,329.90

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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.