Home / 11,423.40-15,764.64-6,387.48

Finding the Fourth Proportional to 11,423.40, 15,764.64 and 6,387.48

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Solution

The fourth proportional to 11,423.40, 15,764.64 and 6,387.48 is: 8,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.40 : 15,764.64 = 6,387.48 : x
  2. Step 2: Convert to fraction form
    11,423.40/15,764.64 = 6,387.48/x
  3. Step 3: Cross multiply
    11,423.40x = 15,764.64 × 6,387.48
  4. Step 4: Simplify right side
    11,423.40x = 100,696,322.71
  5. Step 5: Solve for x
    x = 100,696,322.71/11,423.40
  6. Step 6: Final answer
    x = 8,814.92

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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.