Home / 20,357.02-30,531.87-7,209.46

Finding the Fourth Proportional to 20,357.02, 30,531.87 and 7,209.46

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Solution

The fourth proportional to 20,357.02, 30,531.87 and 7,209.46 is: 10,812.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.02 : 30,531.87 = 7,209.46 : x
  2. Step 2: Convert to fraction form
    20,357.02/30,531.87 = 7,209.46/x
  3. Step 3: Cross multiply
    20,357.02x = 30,531.87 × 7,209.46
  4. Step 4: Simplify right side
    20,357.02x = 220,118,295.49
  5. Step 5: Solve for x
    x = 220,118,295.49/20,357.02
  6. Step 6: Final answer
    x = 10,812.89

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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.