Home / 38,880.28-53,641.38-21,881.08

Finding the Fourth Proportional to 38,880.28, 53,641.38 and 21,881.08

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Solution

The fourth proportional to 38,880.28, 53,641.38 and 21,881.08 is: 30,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,880.28 : 53,641.38 = 21,881.08 : x
  2. Step 2: Convert to fraction form
    38,880.28/53,641.38 = 21,881.08/x
  3. Step 3: Cross multiply
    38,880.28x = 53,641.38 × 21,881.08
  4. Step 4: Simplify right side
    38,880.28x = 1,173,731,327.09
  5. Step 5: Solve for x
    x = 1,173,731,327.09/38,880.28
  6. Step 6: Final answer
    x = 30,188.35

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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.