Home / 15,278.68-21,085.46-8,563.98

Finding the Fourth Proportional to 15,278.68, 21,085.46 and 8,563.98

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Solution

The fourth proportional to 15,278.68, 21,085.46 and 8,563.98 is: 11,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.68 : 21,085.46 = 8,563.98 : x
  2. Step 2: Convert to fraction form
    15,278.68/21,085.46 = 8,563.98/x
  3. Step 3: Cross multiply
    15,278.68x = 21,085.46 × 8,563.98
  4. Step 4: Simplify right side
    15,278.68x = 180,575,457.73
  5. Step 5: Solve for x
    x = 180,575,457.73/15,278.68
  6. Step 6: Final answer
    x = 11,818.79

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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.