Home / 15,366.16-21,205.25-8,651.81

Finding the Fourth Proportional to 15,366.16, 21,205.25 and 8,651.81

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Solution

The fourth proportional to 15,366.16, 21,205.25 and 8,651.81 is: 11,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.16 : 21,205.25 = 8,651.81 : x
  2. Step 2: Convert to fraction form
    15,366.16/21,205.25 = 8,651.81/x
  3. Step 3: Cross multiply
    15,366.16x = 21,205.25 × 8,651.81
  4. Step 4: Simplify right side
    15,366.16x = 183,463,841.08
  5. Step 5: Solve for x
    x = 183,463,841.08/15,366.16
  6. Step 6: Final answer
    x = 11,939.47

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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.