Home / 21,479.64-32,223.51-7,439.10

Finding the Fourth Proportional to 21,479.64, 32,223.51 and 7,439.10

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Solution

The fourth proportional to 21,479.64, 32,223.51 and 7,439.10 is: 11,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.64 : 32,223.51 = 7,439.10 : x
  2. Step 2: Convert to fraction form
    21,479.64/32,223.51 = 7,439.10/x
  3. Step 3: Cross multiply
    21,479.64x = 32,223.51 × 7,439.10
  4. Step 4: Simplify right side
    21,479.64x = 239,713,913.24
  5. Step 5: Solve for x
    x = 239,713,913.24/21,479.64
  6. Step 6: Final answer
    x = 11,160.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.