Home / 15,821.86-21,834.60-8,748.76

Finding the Fourth Proportional to 15,821.86, 21,834.60 and 8,748.76

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Solution

The fourth proportional to 15,821.86, 21,834.60 and 8,748.76 is: 12,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.86 : 21,834.60 = 8,748.76 : x
  2. Step 2: Convert to fraction form
    15,821.86/21,834.60 = 8,748.76/x
  3. Step 3: Cross multiply
    15,821.86x = 21,834.60 × 8,748.76
  4. Step 4: Simplify right side
    15,821.86x = 191,025,675.10
  5. Step 5: Solve for x
    x = 191,025,675.10/15,821.86
  6. Step 6: Final answer
    x = 12,073.53

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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.