Home / 39,741.12-54,844.02-21,837.78

Finding the Fourth Proportional to 39,741.12, 54,844.02 and 21,837.78

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Solution

The fourth proportional to 39,741.12, 54,844.02 and 21,837.78 is: 30,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,741.12 : 54,844.02 = 21,837.78 : x
  2. Step 2: Convert to fraction form
    39,741.12/54,844.02 = 21,837.78/x
  3. Step 3: Cross multiply
    39,741.12x = 54,844.02 × 21,837.78
  4. Step 4: Simplify right side
    39,741.12x = 1,197,671,643.08
  5. Step 5: Solve for x
    x = 1,197,671,643.08/39,741.12
  6. Step 6: Final answer
    x = 30,136.84

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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.