Home / 28,220.86-42,332.16-8,499.56

Finding the Fourth Proportional to 28,220.86, 42,332.16 and 8,499.56

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Solution

The fourth proportional to 28,220.86, 42,332.16 and 8,499.56 is: 12,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.86 : 42,332.16 = 8,499.56 : x
  2. Step 2: Convert to fraction form
    28,220.86/42,332.16 = 8,499.56/x
  3. Step 3: Cross multiply
    28,220.86x = 42,332.16 × 8,499.56
  4. Step 4: Simplify right side
    28,220.86x = 359,804,733.85
  5. Step 5: Solve for x
    x = 359,804,733.85/28,220.86
  6. Step 6: Final answer
    x = 12,749.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.