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Finding the Fourth Proportional to 21,510.79, 32,253.75 and 8,347.77

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Solution

The fourth proportional to 21,510.79, 32,253.75 and 8,347.77 is: 12,516.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.79 : 32,253.75 = 8,347.77 : x
  2. Step 2: Convert to fraction form
    21,510.79/32,253.75 = 8,347.77/x
  3. Step 3: Cross multiply
    21,510.79x = 32,253.75 × 8,347.77
  4. Step 4: Simplify right side
    21,510.79x = 269,246,886.64
  5. Step 5: Solve for x
    x = 269,246,886.64/21,510.79
  6. Step 6: Final answer
    x = 12,516.83

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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.