Home / 13,949.71-19,242.43-9,420.19

Finding the Fourth Proportional to 13,949.71, 19,242.43 and 9,420.19

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Solution

The fourth proportional to 13,949.71, 19,242.43 and 9,420.19 is: 12,994.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.71 : 19,242.43 = 9,420.19 : x
  2. Step 2: Convert to fraction form
    13,949.71/19,242.43 = 9,420.19/x
  3. Step 3: Cross multiply
    13,949.71x = 19,242.43 × 9,420.19
  4. Step 4: Simplify right side
    13,949.71x = 181,267,346.66
  5. Step 5: Solve for x
    x = 181,267,346.66/13,949.71
  6. Step 6: Final answer
    x = 12,994.35

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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.