Home / 39,148.72-54,023.96-21,921.10

Finding the Fourth Proportional to 39,148.72, 54,023.96 and 21,921.10

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Solution

The fourth proportional to 39,148.72, 54,023.96 and 21,921.10 is: 30,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,148.72 : 54,023.96 = 21,921.10 : x
  2. Step 2: Convert to fraction form
    39,148.72/54,023.96 = 21,921.10/x
  3. Step 3: Cross multiply
    39,148.72x = 54,023.96 × 21,921.10
  4. Step 4: Simplify right side
    39,148.72x = 1,184,264,549.30
  5. Step 5: Solve for x
    x = 1,184,264,549.30/39,148.72
  6. Step 6: Final answer
    x = 30,250.40

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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.