Home / 38,347.14-52,920.21-20,885.64

Finding the Fourth Proportional to 38,347.14, 52,920.21 and 20,885.64

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Solution

The fourth proportional to 38,347.14, 52,920.21 and 20,885.64 is: 28,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,347.14 : 52,920.21 = 20,885.64 : x
  2. Step 2: Convert to fraction form
    38,347.14/52,920.21 = 20,885.64/x
  3. Step 3: Cross multiply
    38,347.14x = 52,920.21 × 20,885.64
  4. Step 4: Simplify right side
    38,347.14x = 1,105,272,454.78
  5. Step 5: Solve for x
    x = 1,105,272,454.78/38,347.14
  6. Step 6: Final answer
    x = 28,822.81

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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.