Home / 15,721.29-23,686.90-14,222.05

Finding the Fourth Proportional to 15,721.29, 23,686.90 and 14,222.05

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Solution

The fourth proportional to 15,721.29, 23,686.90 and 14,222.05 is: 21,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.29 : 23,686.90 = 14,222.05 : x
  2. Step 2: Convert to fraction form
    15,721.29/23,686.90 = 14,222.05/x
  3. Step 3: Cross multiply
    15,721.29x = 23,686.90 × 14,222.05
  4. Step 4: Simplify right side
    15,721.29x = 336,876,181.37
  5. Step 5: Solve for x
    x = 336,876,181.37/15,721.29
  6. Step 6: Final answer
    x = 21,428.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.