Home / 15,765.74-21,756.42-8,595.72

Finding the Fourth Proportional to 15,765.74, 21,756.42 and 8,595.72

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Solution

The fourth proportional to 15,765.74, 21,756.42 and 8,595.72 is: 11,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.74 : 21,756.42 = 8,595.72 : x
  2. Step 2: Convert to fraction form
    15,765.74/21,756.42 = 8,595.72/x
  3. Step 3: Cross multiply
    15,765.74x = 21,756.42 × 8,595.72
  4. Step 4: Simplify right side
    15,765.74x = 187,012,094.52
  5. Step 5: Solve for x
    x = 187,012,094.52/15,765.74
  6. Step 6: Final answer
    x = 11,861.93

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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.