Home / 20,767.02-31,121.28-9,055.68

Finding the Fourth Proportional to 20,767.02, 31,121.28 and 9,055.68

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Solution

The fourth proportional to 20,767.02, 31,121.28 and 9,055.68 is: 13,570.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.02 : 31,121.28 = 9,055.68 : x
  2. Step 2: Convert to fraction form
    20,767.02/31,121.28 = 9,055.68/x
  3. Step 3: Cross multiply
    20,767.02x = 31,121.28 × 9,055.68
  4. Step 4: Simplify right side
    20,767.02x = 281,824,352.87
  5. Step 5: Solve for x
    x = 281,824,352.87/20,767.02
  6. Step 6: Final answer
    x = 13,570.77

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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.