Home / 21,775.60-30,007.32-15,470.32

Finding the Fourth Proportional to 21,775.60, 30,007.32 and 15,470.32

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Solution

The fourth proportional to 21,775.60, 30,007.32 and 15,470.32 is: 21,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.60 : 30,007.32 = 15,470.32 : x
  2. Step 2: Convert to fraction form
    21,775.60/30,007.32 = 15,470.32/x
  3. Step 3: Cross multiply
    21,775.60x = 30,007.32 × 15,470.32
  4. Step 4: Simplify right side
    21,775.60x = 464,222,842.74
  5. Step 5: Solve for x
    x = 464,222,842.74/21,775.60
  6. Step 6: Final answer
    x = 21,318.49

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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.