Home / 19,551.12-26,985.24-11,172.48

Finding the Fourth Proportional to 19,551.12, 26,985.24 and 11,172.48

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Solution

The fourth proportional to 19,551.12, 26,985.24 and 11,172.48 is: 15,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.12 : 26,985.24 = 11,172.48 : x
  2. Step 2: Convert to fraction form
    19,551.12/26,985.24 = 11,172.48/x
  3. Step 3: Cross multiply
    19,551.12x = 26,985.24 × 11,172.48
  4. Step 4: Simplify right side
    19,551.12x = 301,492,054.20
  5. Step 5: Solve for x
    x = 301,492,054.20/19,551.12
  6. Step 6: Final answer
    x = 15,420.71

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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.