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Finding the Fourth Proportional to 15,555.99, 21,467.48 and 8,482.71

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Solution

The fourth proportional to 15,555.99, 21,467.48 and 8,482.71 is: 11,706.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.99 : 21,467.48 = 8,482.71 : x
  2. Step 2: Convert to fraction form
    15,555.99/21,467.48 = 8,482.71/x
  3. Step 3: Cross multiply
    15,555.99x = 21,467.48 × 8,482.71
  4. Step 4: Simplify right side
    15,555.99x = 182,102,364.86
  5. Step 5: Solve for x
    x = 182,102,364.86/15,555.99
  6. Step 6: Final answer
    x = 11,706.25

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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.