Home / 20,178.36-30,250.53-9,642.42

Finding the Fourth Proportional to 20,178.36, 30,250.53 and 9,642.42

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Solution

The fourth proportional to 20,178.36, 30,250.53 and 9,642.42 is: 14,455.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.36 : 30,250.53 = 9,642.42 : x
  2. Step 2: Convert to fraction form
    20,178.36/30,250.53 = 9,642.42/x
  3. Step 3: Cross multiply
    20,178.36x = 30,250.53 × 9,642.42
  4. Step 4: Simplify right side
    20,178.36x = 291,688,315.48
  5. Step 5: Solve for x
    x = 291,688,315.48/20,178.36
  6. Step 6: Final answer
    x = 14,455.50

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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.