Home / 28,967.28-39,994.56-21,932.16

Finding the Fourth Proportional to 28,967.28, 39,994.56 and 21,932.16

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Solution

The fourth proportional to 28,967.28, 39,994.56 and 21,932.16 is: 30,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.28 : 39,994.56 = 21,932.16 : x
  2. Step 2: Convert to fraction form
    28,967.28/39,994.56 = 21,932.16/x
  3. Step 3: Cross multiply
    28,967.28x = 39,994.56 × 21,932.16
  4. Step 4: Simplify right side
    28,967.28x = 877,167,089.05
  5. Step 5: Solve for x
    x = 877,167,089.05/28,967.28
  6. Step 6: Final answer
    x = 30,281.31

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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.