Home / 30,228.40-45,256.20-18,564.40

Finding the Fourth Proportional to 30,228.40, 45,256.20 and 18,564.40

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Solution

The fourth proportional to 30,228.40, 45,256.20 and 18,564.40 is: 27,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,228.40 : 45,256.20 = 18,564.40 : x
  2. Step 2: Convert to fraction form
    30,228.40/45,256.20 = 18,564.40/x
  3. Step 3: Cross multiply
    30,228.40x = 45,256.20 × 18,564.40
  4. Step 4: Simplify right side
    30,228.40x = 840,154,199.28
  5. Step 5: Solve for x
    x = 840,154,199.28/30,228.40
  6. Step 6: Final answer
    x = 27,793.54

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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.