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Finding the Fourth Proportional to 15,462.76, 21,328.02 and 10,743.64

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Solution

The fourth proportional to 15,462.76, 21,328.02 and 10,743.64 is: 14,818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.76 : 21,328.02 = 10,743.64 : x
  2. Step 2: Convert to fraction form
    15,462.76/21,328.02 = 10,743.64/x
  3. Step 3: Cross multiply
    15,462.76x = 21,328.02 × 10,743.64
  4. Step 4: Simplify right side
    15,462.76x = 229,140,568.79
  5. Step 5: Solve for x
    x = 229,140,568.79/15,462.76
  6. Step 6: Final answer
    x = 14,818.87

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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.