Home / 39,557.12-54,588.35-21,407.42

Finding the Fourth Proportional to 39,557.12, 54,588.35 and 21,407.42

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Solution

The fourth proportional to 39,557.12, 54,588.35 and 21,407.42 is: 29,541.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,557.12 : 54,588.35 = 21,407.42 : x
  2. Step 2: Convert to fraction form
    39,557.12/54,588.35 = 21,407.42/x
  3. Step 3: Cross multiply
    39,557.12x = 54,588.35 × 21,407.42
  4. Step 4: Simplify right side
    39,557.12x = 1,168,595,735.56
  5. Step 5: Solve for x
    x = 1,168,595,735.56/39,557.12
  6. Step 6: Final answer
    x = 29,541.98

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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.