Home / 20,148.90-30,223.35-18,302.10

Finding the Fourth Proportional to 20,148.90, 30,223.35 and 18,302.10

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Solution

The fourth proportional to 20,148.90, 30,223.35 and 18,302.10 is: 27,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.90 : 30,223.35 = 18,302.10 : x
  2. Step 2: Convert to fraction form
    20,148.90/30,223.35 = 18,302.10/x
  3. Step 3: Cross multiply
    20,148.90x = 30,223.35 × 18,302.10
  4. Step 4: Simplify right side
    20,148.90x = 553,150,774.04
  5. Step 5: Solve for x
    x = 553,150,774.04/20,148.90
  6. Step 6: Final answer
    x = 27,453.15

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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.