Home / 38,672.12-53,365.74-21,905.24

Finding the Fourth Proportional to 38,672.12, 53,365.74 and 21,905.24

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Solution

The fourth proportional to 38,672.12, 53,365.74 and 21,905.24 is: 30,228.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,672.12 : 53,365.74 = 21,905.24 : x
  2. Step 2: Convert to fraction form
    38,672.12/53,365.74 = 21,905.24/x
  3. Step 3: Cross multiply
    38,672.12x = 53,365.74 × 21,905.24
  4. Step 4: Simplify right side
    38,672.12x = 1,168,989,342.48
  5. Step 5: Solve for x
    x = 1,168,989,342.48/38,672.12
  6. Step 6: Final answer
    x = 30,228.22

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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.