Home / 21,631.86-32,447.79-9,953.28

Finding the Fourth Proportional to 21,631.86, 32,447.79 and 9,953.28

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Solution

The fourth proportional to 21,631.86, 32,447.79 and 9,953.28 is: 14,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.86 : 32,447.79 = 9,953.28 : x
  2. Step 2: Convert to fraction form
    21,631.86/32,447.79 = 9,953.28/x
  3. Step 3: Cross multiply
    21,631.86x = 32,447.79 × 9,953.28
  4. Step 4: Simplify right side
    21,631.86x = 322,961,939.25
  5. Step 5: Solve for x
    x = 322,961,939.25/21,631.86
  6. Step 6: Final answer
    x = 14,929.92

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1.5x scale

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.