Home / 38,683.17-53,385.03-21,686.58

Finding the Fourth Proportional to 38,683.17, 53,385.03 and 21,686.58

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Solution

The fourth proportional to 38,683.17, 53,385.03 and 21,686.58 is: 29,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,683.17 : 53,385.03 = 21,686.58 : x
  2. Step 2: Convert to fraction form
    38,683.17/53,385.03 = 21,686.58/x
  3. Step 3: Cross multiply
    38,683.17x = 53,385.03 × 21,686.58
  4. Step 4: Simplify right side
    38,683.17x = 1,157,738,723.90
  5. Step 5: Solve for x
    x = 1,157,738,723.90/38,683.17
  6. Step 6: Final answer
    x = 29,928.74

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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.