Home / 20,880.03-31,320.02-7,029.03

Finding the Fourth Proportional to 20,880.03, 31,320.02 and 7,029.03

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Solution

The fourth proportional to 20,880.03, 31,320.02 and 7,029.03 is: 10,543.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.03 : 31,320.02 = 7,029.03 : x
  2. Step 2: Convert to fraction form
    20,880.03/31,320.02 = 7,029.03/x
  3. Step 3: Cross multiply
    20,880.03x = 31,320.02 × 7,029.03
  4. Step 4: Simplify right side
    20,880.03x = 220,149,325.04
  5. Step 5: Solve for x
    x = 220,149,325.04/20,880.03
  6. Step 6: Final answer
    x = 10,543.53

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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.