Home / 21,887.24-30,197.36-12,937.75

Finding the Fourth Proportional to 21,887.24, 30,197.36 and 12,937.75

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Solution

The fourth proportional to 21,887.24, 30,197.36 and 12,937.75 is: 17,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.24 : 30,197.36 = 12,937.75 : x
  2. Step 2: Convert to fraction form
    21,887.24/30,197.36 = 12,937.75/x
  3. Step 3: Cross multiply
    21,887.24x = 30,197.36 × 12,937.75
  4. Step 4: Simplify right side
    21,887.24x = 390,685,851.19
  5. Step 5: Solve for x
    x = 390,685,851.19/21,887.24
  6. Step 6: Final answer
    x = 17,849.94

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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.