Home / 13,938.12-19,233.62-7,649.32

Finding the Fourth Proportional to 13,938.12, 19,233.62 and 7,649.32

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Solution

The fourth proportional to 13,938.12, 19,233.62 and 7,649.32 is: 10,555.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.12 : 19,233.62 = 7,649.32 : x
  2. Step 2: Convert to fraction form
    13,938.12/19,233.62 = 7,649.32/x
  3. Step 3: Cross multiply
    13,938.12x = 19,233.62 × 7,649.32
  4. Step 4: Simplify right side
    13,938.12x = 147,124,114.14
  5. Step 5: Solve for x
    x = 147,124,114.14/13,938.12
  6. Step 6: Final answer
    x = 10,555.52

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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.