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Finding the Fourth Proportional to 21,339.54, 32,016.16 and 8,865.54

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Solution

The fourth proportional to 21,339.54, 32,016.16 and 8,865.54 is: 13,301.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.54 : 32,016.16 = 8,865.54 : x
  2. Step 2: Convert to fraction form
    21,339.54/32,016.16 = 8,865.54/x
  3. Step 3: Cross multiply
    21,339.54x = 32,016.16 × 8,865.54
  4. Step 4: Simplify right side
    21,339.54x = 283,840,547.13
  5. Step 5: Solve for x
    x = 283,840,547.13/21,339.54
  6. Step 6: Final answer
    x = 13,301.16

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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.