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Finding the Fourth Proportional to 21,795.66, 32,653.98 and 9,959.40

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Solution

The fourth proportional to 21,795.66, 32,653.98 and 9,959.40 is: 14,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.66 : 32,653.98 = 9,959.40 : x
  2. Step 2: Convert to fraction form
    21,795.66/32,653.98 = 9,959.40/x
  3. Step 3: Cross multiply
    21,795.66x = 32,653.98 × 9,959.40
  4. Step 4: Simplify right side
    21,795.66x = 325,214,048.41
  5. Step 5: Solve for x
    x = 325,214,048.41/21,795.66
  6. Step 6: Final answer
    x = 14,921.05

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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.