Home / 38,142.07-52,628.55-21,145.57

Finding the Fourth Proportional to 38,142.07, 52,628.55 and 21,145.57

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Solution

The fourth proportional to 38,142.07, 52,628.55 and 21,145.57 is: 29,176.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.07 : 52,628.55 = 21,145.57 : x
  2. Step 2: Convert to fraction form
    38,142.07/52,628.55 = 21,145.57/x
  3. Step 3: Cross multiply
    38,142.07x = 52,628.55 × 21,145.57
  4. Step 4: Simplify right side
    38,142.07x = 1,112,860,688.02
  5. Step 5: Solve for x
    x = 1,112,860,688.02/38,142.07
  6. Step 6: Final answer
    x = 29,176.73

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Double scale
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Similar ratio
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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.