Home / 13,574.36-18,723.48-7,985.36

Finding the Fourth Proportional to 13,574.36, 18,723.48 and 7,985.36

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Solution

The fourth proportional to 13,574.36, 18,723.48 and 7,985.36 is: 11,014.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,574.36 : 18,723.48 = 7,985.36 : x
  2. Step 2: Convert to fraction form
    13,574.36/18,723.48 = 7,985.36/x
  3. Step 3: Cross multiply
    13,574.36x = 18,723.48 × 7,985.36
  4. Step 4: Simplify right side
    13,574.36x = 149,513,728.25
  5. Step 5: Solve for x
    x = 149,513,728.25/13,574.36
  6. Step 6: Final answer
    x = 11,014.42

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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.