Home / 38,115.95-52,599.89-21,120.26

Finding the Fourth Proportional to 38,115.95, 52,599.89 and 21,120.26

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Solution

The fourth proportional to 38,115.95, 52,599.89 and 21,120.26 is: 29,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,115.95 : 52,599.89 = 21,120.26 : x
  2. Step 2: Convert to fraction form
    38,115.95/52,599.89 = 21,120.26/x
  3. Step 3: Cross multiply
    38,115.95x = 52,599.89 × 21,120.26
  4. Step 4: Simplify right side
    38,115.95x = 1,110,922,984.17
  5. Step 5: Solve for x
    x = 1,110,922,984.17/38,115.95
  6. Step 6: Final answer
    x = 29,145.89

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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.