Home / 39,018.08-53,806.60-38,394.78

Finding the Fourth Proportional to 39,018.08, 53,806.60 and 38,394.78

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Solution

The fourth proportional to 39,018.08, 53,806.60 and 38,394.78 is: 52,947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,018.08 : 53,806.60 = 38,394.78 : x
  2. Step 2: Convert to fraction form
    39,018.08/53,806.60 = 38,394.78/x
  3. Step 3: Cross multiply
    39,018.08x = 53,806.60 × 38,394.78
  4. Step 4: Simplify right side
    39,018.08x = 2,065,892,569.55
  5. Step 5: Solve for x
    x = 2,065,892,569.55/39,018.08
  6. Step 6: Final answer
    x = 52,947.06

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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.