Home / 38,886.17-53,660.12-21,889.53

Finding the Fourth Proportional to 38,886.17, 53,660.12 and 21,889.53

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Solution

The fourth proportional to 38,886.17, 53,660.12 and 21,889.53 is: 30,205.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,886.17 : 53,660.12 = 21,889.53 : x
  2. Step 2: Convert to fraction form
    38,886.17/53,660.12 = 21,889.53/x
  3. Step 3: Cross multiply
    38,886.17x = 53,660.12 × 21,889.53
  4. Step 4: Simplify right side
    38,886.17x = 1,174,594,697.10
  5. Step 5: Solve for x
    x = 1,174,594,697.10/38,886.17
  6. Step 6: Final answer
    x = 30,205.98

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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.