Home / 15,457.74-21,330.24-8,743.85

Finding the Fourth Proportional to 15,457.74, 21,330.24 and 8,743.85

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Solution

The fourth proportional to 15,457.74, 21,330.24 and 8,743.85 is: 12,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.74 : 21,330.24 = 8,743.85 : x
  2. Step 2: Convert to fraction form
    15,457.74/21,330.24 = 8,743.85/x
  3. Step 3: Cross multiply
    15,457.74x = 21,330.24 × 8,743.85
  4. Step 4: Simplify right side
    15,457.74x = 186,508,359.57
  5. Step 5: Solve for x
    x = 186,508,359.57/15,457.74
  6. Step 6: Final answer
    x = 12,065.70

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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.