Home / 21,866.49-30,177.28-12,307.30

Finding the Fourth Proportional to 21,866.49, 30,177.28 and 12,307.30

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Solution

The fourth proportional to 21,866.49, 30,177.28 and 12,307.30 is: 16,984.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.49 : 30,177.28 = 12,307.30 : x
  2. Step 2: Convert to fraction form
    21,866.49/30,177.28 = 12,307.30/x
  3. Step 3: Cross multiply
    21,866.49x = 30,177.28 × 12,307.30
  4. Step 4: Simplify right side
    21,866.49x = 371,400,778.08
  5. Step 5: Solve for x
    x = 371,400,778.08/21,866.49
  6. Step 6: Final answer
    x = 16,984.93

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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.