Home / 21,400.64-32,106.44-8,916.52

Finding the Fourth Proportional to 21,400.64, 32,106.44 and 8,916.52

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Solution

The fourth proportional to 21,400.64, 32,106.44 and 8,916.52 is: 13,377.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.64 : 32,106.44 = 8,916.52 : x
  2. Step 2: Convert to fraction form
    21,400.64/32,106.44 = 8,916.52/x
  3. Step 3: Cross multiply
    21,400.64x = 32,106.44 × 8,916.52
  4. Step 4: Simplify right side
    21,400.64x = 286,277,714.39
  5. Step 5: Solve for x
    x = 286,277,714.39/21,400.64
  6. Step 6: Final answer
    x = 13,377.06

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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.