Home / 15,821.76-21,835.26-8,748.84

Finding the Fourth Proportional to 15,821.76, 21,835.26 and 8,748.84

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Solution

The fourth proportional to 15,821.76, 21,835.26 and 8,748.84 is: 12,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.76 : 21,835.26 = 8,748.84 : x
  2. Step 2: Convert to fraction form
    15,821.76/21,835.26 = 8,748.84/x
  3. Step 3: Cross multiply
    15,821.76x = 21,835.26 × 8,748.84
  4. Step 4: Simplify right side
    15,821.76x = 191,033,196.10
  5. Step 5: Solve for x
    x = 191,033,196.10/15,821.76
  6. Step 6: Final answer
    x = 12,074.08

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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.