Home / 30,667.72-42,328.92-18,741.10

Finding the Fourth Proportional to 30,667.72, 42,328.92 and 18,741.10

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Solution

The fourth proportional to 30,667.72, 42,328.92 and 18,741.10 is: 25,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,667.72 : 42,328.92 = 18,741.10 : x
  2. Step 2: Convert to fraction form
    30,667.72/42,328.92 = 18,741.10/x
  3. Step 3: Cross multiply
    30,667.72x = 42,328.92 × 18,741.10
  4. Step 4: Simplify right side
    30,667.72x = 793,290,522.61
  5. Step 5: Solve for x
    x = 793,290,522.61/30,667.72
  6. Step 6: Final answer
    x = 25,867.28

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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.