Home / 13,470.19-18,587.23-7,727.35

Finding the Fourth Proportional to 13,470.19, 18,587.23 and 7,727.35

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Solution

The fourth proportional to 13,470.19, 18,587.23 and 7,727.35 is: 10,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.19 : 18,587.23 = 7,727.35 : x
  2. Step 2: Convert to fraction form
    13,470.19/18,587.23 = 7,727.35/x
  3. Step 3: Cross multiply
    13,470.19x = 18,587.23 × 7,727.35
  4. Step 4: Simplify right side
    13,470.19x = 143,629,965.95
  5. Step 5: Solve for x
    x = 143,629,965.95/13,470.19
  6. Step 6: Final answer
    x = 10,662.80

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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.