Home / 19,939.36-27,515.32-10,985.42

Finding the Fourth Proportional to 19,939.36, 27,515.32 and 10,985.42

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Solution

The fourth proportional to 19,939.36, 27,515.32 and 10,985.42 is: 15,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.36 : 27,515.32 = 10,985.42 : x
  2. Step 2: Convert to fraction form
    19,939.36/27,515.32 = 10,985.42/x
  3. Step 3: Cross multiply
    19,939.36x = 27,515.32 × 10,985.42
  4. Step 4: Simplify right side
    19,939.36x = 302,267,181.59
  5. Step 5: Solve for x
    x = 302,267,181.59/19,939.36
  6. Step 6: Final answer
    x = 15,159.32

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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.