Home / 13,055.61-18,028.76-12,356.47

Finding the Fourth Proportional to 13,055.61, 18,028.76 and 12,356.47

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Solution

The fourth proportional to 13,055.61, 18,028.76 and 12,356.47 is: 17,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.61 : 18,028.76 = 12,356.47 : x
  2. Step 2: Convert to fraction form
    13,055.61/18,028.76 = 12,356.47/x
  3. Step 3: Cross multiply
    13,055.61x = 18,028.76 × 12,356.47
  4. Step 4: Simplify right side
    13,055.61x = 222,771,832.08
  5. Step 5: Solve for x
    x = 222,771,832.08/13,055.61
  6. Step 6: Final answer
    x = 17,063.30

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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.