Home / 13,895.30-19,178.35-9,420.49

Finding the Fourth Proportional to 13,895.30, 19,178.35 and 9,420.49

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Solution

The fourth proportional to 13,895.30, 19,178.35 and 9,420.49 is: 13,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.30 : 19,178.35 = 9,420.49 : x
  2. Step 2: Convert to fraction form
    13,895.30/19,178.35 = 9,420.49/x
  3. Step 3: Cross multiply
    13,895.30x = 19,178.35 × 9,420.49
  4. Step 4: Simplify right side
    13,895.30x = 180,669,454.39
  5. Step 5: Solve for x
    x = 180,669,454.39/13,895.30
  6. Step 6: Final answer
    x = 13,002.20

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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.