Home / 38,869.74-53,646.71-21,881.61

Finding the Fourth Proportional to 38,869.74, 53,646.71 and 21,881.61

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Solution

The fourth proportional to 38,869.74, 53,646.71 and 21,881.61 is: 30,200.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,869.74 : 53,646.71 = 21,881.61 : x
  2. Step 2: Convert to fraction form
    38,869.74/53,646.71 = 21,881.61/x
  3. Step 3: Cross multiply
    38,869.74x = 53,646.71 × 21,881.61
  4. Step 4: Simplify right side
    38,869.74x = 1,173,876,276.60
  5. Step 5: Solve for x
    x = 1,173,876,276.60/38,869.74
  6. Step 6: Final answer
    x = 30,200.26

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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.