Home / 21,668.20-29,901.70-12,237.16

Finding the Fourth Proportional to 21,668.20, 29,901.70 and 12,237.16

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Solution

The fourth proportional to 21,668.20, 29,901.70 and 12,237.16 is: 16,887.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.20 : 29,901.70 = 12,237.16 : x
  2. Step 2: Convert to fraction form
    21,668.20/29,901.70 = 12,237.16/x
  3. Step 3: Cross multiply
    21,668.20x = 29,901.70 × 12,237.16
  4. Step 4: Simplify right side
    21,668.20x = 365,911,887.17
  5. Step 5: Solve for x
    x = 365,911,887.17/21,668.20
  6. Step 6: Final answer
    x = 16,887.05

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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.