Home / 21,350.68-29,479.86-13,801.74

Finding the Fourth Proportional to 21,350.68, 29,479.86 and 13,801.74

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Solution

The fourth proportional to 21,350.68, 29,479.86 and 13,801.74 is: 19,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.68 : 29,479.86 = 13,801.74 : x
  2. Step 2: Convert to fraction form
    21,350.68/29,479.86 = 13,801.74/x
  3. Step 3: Cross multiply
    21,350.68x = 29,479.86 × 13,801.74
  4. Step 4: Simplify right side
    21,350.68x = 406,873,362.96
  5. Step 5: Solve for x
    x = 406,873,362.96/21,350.68
  6. Step 6: Final answer
    x = 19,056.69

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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.