Home / 30,188.90-45,291.56-21,479.18

Finding the Fourth Proportional to 30,188.90, 45,291.56 and 21,479.18

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Solution

The fourth proportional to 30,188.90, 45,291.56 and 21,479.18 is: 32,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,188.90 : 45,291.56 = 21,479.18 : x
  2. Step 2: Convert to fraction form
    30,188.90/45,291.56 = 21,479.18/x
  3. Step 3: Cross multiply
    30,188.90x = 45,291.56 × 21,479.18
  4. Step 4: Simplify right side
    30,188.90x = 972,825,235.87
  5. Step 5: Solve for x
    x = 972,825,235.87/30,188.90
  6. Step 6: Final answer
    x = 32,224.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.