Home / 15,219.37-21,005.13-9,252.91

Finding the Fourth Proportional to 15,219.37, 21,005.13 and 9,252.91

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Solution

The fourth proportional to 15,219.37, 21,005.13 and 9,252.91 is: 12,770.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.37 : 21,005.13 = 9,252.91 : x
  2. Step 2: Convert to fraction form
    15,219.37/21,005.13 = 9,252.91/x
  3. Step 3: Cross multiply
    15,219.37x = 21,005.13 × 9,252.91
  4. Step 4: Simplify right side
    15,219.37x = 194,358,577.43
  5. Step 5: Solve for x
    x = 194,358,577.43/15,219.37
  6. Step 6: Final answer
    x = 12,770.47

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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.