Home / 38,445.28-53,054.40-21,678.16

Finding the Fourth Proportional to 38,445.28, 53,054.40 and 21,678.16

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Solution

The fourth proportional to 38,445.28, 53,054.40 and 21,678.16 is: 29,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.28 : 53,054.40 = 21,678.16 : x
  2. Step 2: Convert to fraction form
    38,445.28/53,054.40 = 21,678.16/x
  3. Step 3: Cross multiply
    38,445.28x = 53,054.40 × 21,678.16
  4. Step 4: Simplify right side
    38,445.28x = 1,150,121,771.90
  5. Step 5: Solve for x
    x = 1,150,121,771.90/38,445.28
  6. Step 6: Final answer
    x = 29,915.81

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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.