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Finding the Fourth Proportional to 15,649.98, 21,597.04 and 8,479.91

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Solution

The fourth proportional to 15,649.98, 21,597.04 and 8,479.91 is: 11,702.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649.98 : 21,597.04 = 8,479.91 : x
  2. Step 2: Convert to fraction form
    15,649.98/21,597.04 = 8,479.91/x
  3. Step 3: Cross multiply
    15,649.98x = 21,597.04 × 8,479.91
  4. Step 4: Simplify right side
    15,649.98x = 183,140,913.07
  5. Step 5: Solve for x
    x = 183,140,913.07/15,649.98
  6. Step 6: Final answer
    x = 11,702.31

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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.