Home / 39,216.75-54,119.60-21,312.06

Finding the Fourth Proportional to 39,216.75, 54,119.60 and 21,312.06

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Solution

The fourth proportional to 39,216.75, 54,119.60 and 21,312.06 is: 29,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.75 : 54,119.60 = 21,312.06 : x
  2. Step 2: Convert to fraction form
    39,216.75/54,119.60 = 21,312.06/x
  3. Step 3: Cross multiply
    39,216.75x = 54,119.60 × 21,312.06
  4. Step 4: Simplify right side
    39,216.75x = 1,153,400,055.82
  5. Step 5: Solve for x
    x = 1,153,400,055.82/39,216.75
  6. Step 6: Final answer
    x = 29,410.90

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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.