Home / 20,113.78-30,180.72-9,028.36

Finding the Fourth Proportional to 20,113.78, 30,180.72 and 9,028.36

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Solution

The fourth proportional to 20,113.78, 30,180.72 and 9,028.36 is: 13,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.78 : 30,180.72 = 9,028.36 : x
  2. Step 2: Convert to fraction form
    20,113.78/30,180.72 = 9,028.36/x
  3. Step 3: Cross multiply
    20,113.78x = 30,180.72 × 9,028.36
  4. Step 4: Simplify right side
    20,113.78x = 272,482,405.22
  5. Step 5: Solve for x
    x = 272,482,405.22/20,113.78
  6. Step 6: Final answer
    x = 13,547.05

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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.