Home / 34,767.77-47,980.35-20,620.71

Finding the Fourth Proportional to 34,767.77, 47,980.35 and 20,620.71

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Solution

The fourth proportional to 34,767.77, 47,980.35 and 20,620.71 is: 28,457.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,767.77 : 47,980.35 = 20,620.71 : x
  2. Step 2: Convert to fraction form
    34,767.77/47,980.35 = 20,620.71/x
  3. Step 3: Cross multiply
    34,767.77x = 47,980.35 × 20,620.71
  4. Step 4: Simplify right side
    34,767.77x = 989,388,883.05
  5. Step 5: Solve for x
    x = 989,388,883.05/34,767.77
  6. Step 6: Final answer
    x = 28,457.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.