Home / 39,116.77-53,980.84-21,211.75

Finding the Fourth Proportional to 39,116.77, 53,980.84 and 21,211.75

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Solution

The fourth proportional to 39,116.77, 53,980.84 and 21,211.75 is: 29,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,116.77 : 53,980.84 = 21,211.75 : x
  2. Step 2: Convert to fraction form
    39,116.77/53,980.84 = 21,211.75/x
  3. Step 3: Cross multiply
    39,116.77x = 53,980.84 × 21,211.75
  4. Step 4: Simplify right side
    39,116.77x = 1,145,028,082.87
  5. Step 5: Solve for x
    x = 1,145,028,082.87/39,116.77
  6. Step 6: Final answer
    x = 29,272.05

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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.