Home / 21,730.72-32,596.09-13,988.74

Finding the Fourth Proportional to 21,730.72, 32,596.09 and 13,988.74

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Solution

The fourth proportional to 21,730.72, 32,596.09 and 13,988.74 is: 20,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.72 : 32,596.09 = 13,988.74 : x
  2. Step 2: Convert to fraction form
    21,730.72/32,596.09 = 13,988.74/x
  3. Step 3: Cross multiply
    21,730.72x = 32,596.09 × 13,988.74
  4. Step 4: Simplify right side
    21,730.72x = 455,978,239.57
  5. Step 5: Solve for x
    x = 455,978,239.57/21,730.72
  6. Step 6: Final answer
    x = 20,983.11

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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.