Home / 21,913.52-30,237.72-12,961.52

Finding the Fourth Proportional to 21,913.52, 30,237.72 and 12,961.52

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Solution

The fourth proportional to 21,913.52, 30,237.72 and 12,961.52 is: 17,885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.52 : 30,237.72 = 12,961.52 : x
  2. Step 2: Convert to fraction form
    21,913.52/30,237.72 = 12,961.52/x
  3. Step 3: Cross multiply
    21,913.52x = 30,237.72 × 12,961.52
  4. Step 4: Simplify right side
    21,913.52x = 391,926,812.53
  5. Step 5: Solve for x
    x = 391,926,812.53/21,913.52
  6. Step 6: Final answer
    x = 17,885.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.