Home / 37,618.34-51,913.31-20,390.76

Finding the Fourth Proportional to 37,618.34, 51,913.31 and 20,390.76

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Solution

The fourth proportional to 37,618.34, 51,913.31 and 20,390.76 is: 28,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,618.34 : 51,913.31 = 20,390.76 : x
  2. Step 2: Convert to fraction form
    37,618.34/51,913.31 = 20,390.76/x
  3. Step 3: Cross multiply
    37,618.34x = 51,913.31 × 20,390.76
  4. Step 4: Simplify right side
    37,618.34x = 1,058,551,743.06
  5. Step 5: Solve for x
    x = 1,058,551,743.06/37,618.34
  6. Step 6: Final answer
    x = 28,139.25

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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.