Home / 38,903.93-53,686.71-21,908.10

Finding the Fourth Proportional to 38,903.93, 53,686.71 and 21,908.10

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Solution

The fourth proportional to 38,903.93, 53,686.71 and 21,908.10 is: 30,232.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,903.93 : 53,686.71 = 21,908.10 : x
  2. Step 2: Convert to fraction form
    38,903.93/53,686.71 = 21,908.10/x
  3. Step 3: Cross multiply
    38,903.93x = 53,686.71 × 21,908.10
  4. Step 4: Simplify right side
    38,903.93x = 1,176,173,811.35
  5. Step 5: Solve for x
    x = 1,176,173,811.35/38,903.93
  6. Step 6: Final answer
    x = 30,232.78

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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.