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Finding the Fourth Proportional to 21,556.95, 32,335.59 and 7,516.95

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Solution

The fourth proportional to 21,556.95, 32,335.59 and 7,516.95 is: 11,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.95 : 32,335.59 = 7,516.95 : x
  2. Step 2: Convert to fraction form
    21,556.95/32,335.59 = 7,516.95/x
  3. Step 3: Cross multiply
    21,556.95x = 32,335.59 × 7,516.95
  4. Step 4: Simplify right side
    21,556.95x = 243,065,059.79
  5. Step 5: Solve for x
    x = 243,065,059.79/21,556.95
  6. Step 6: Final answer
    x = 11,275.48

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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.