Home / 21,697.77-29,926.84-15,317.71

Finding the Fourth Proportional to 21,697.77, 29,926.84 and 15,317.71

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Solution

The fourth proportional to 21,697.77, 29,926.84 and 15,317.71 is: 21,127.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,697.77 : 29,926.84 = 15,317.71 : x
  2. Step 2: Convert to fraction form
    21,697.77/29,926.84 = 15,317.71/x
  3. Step 3: Cross multiply
    21,697.77x = 29,926.84 × 15,317.71
  4. Step 4: Simplify right side
    21,697.77x = 458,410,638.07
  5. Step 5: Solve for x
    x = 458,410,638.07/21,697.77
  6. Step 6: Final answer
    x = 21,127.09

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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.