Home / 30,378.90-45,568.35-19,225.20

Finding the Fourth Proportional to 30,378.90, 45,568.35 and 19,225.20

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Solution

The fourth proportional to 30,378.90, 45,568.35 and 19,225.20 is: 28,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.90 : 45,568.35 = 19,225.20 : x
  2. Step 2: Convert to fraction form
    30,378.90/45,568.35 = 19,225.20/x
  3. Step 3: Cross multiply
    30,378.90x = 45,568.35 × 19,225.20
  4. Step 4: Simplify right side
    30,378.90x = 876,060,642.42
  5. Step 5: Solve for x
    x = 876,060,642.42/30,378.90
  6. Step 6: Final answer
    x = 28,837.80

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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.