Home / 21,254.36-31,865.72-14,661.76

Finding the Fourth Proportional to 21,254.36, 31,865.72 and 14,661.76

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Solution

The fourth proportional to 21,254.36, 31,865.72 and 14,661.76 is: 21,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.36 : 31,865.72 = 14,661.76 : x
  2. Step 2: Convert to fraction form
    21,254.36/31,865.72 = 14,661.76/x
  3. Step 3: Cross multiply
    21,254.36x = 31,865.72 × 14,661.76
  4. Step 4: Simplify right side
    21,254.36x = 467,207,538.87
  5. Step 5: Solve for x
    x = 467,207,538.87/21,254.36
  6. Step 6: Final answer
    x = 21,981.73

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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.