Home / 13,944.63-19,247.13-7,978.17

Finding the Fourth Proportional to 13,944.63, 19,247.13 and 7,978.17

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Solution

The fourth proportional to 13,944.63, 19,247.13 and 7,978.17 is: 11,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,944.63 : 19,247.13 = 7,978.17 : x
  2. Step 2: Convert to fraction form
    13,944.63/19,247.13 = 7,978.17/x
  3. Step 3: Cross multiply
    13,944.63x = 19,247.13 × 7,978.17
  4. Step 4: Simplify right side
    13,944.63x = 153,556,875.15
  5. Step 5: Solve for x
    x = 153,556,875.15/13,944.63
  6. Step 6: Final answer
    x = 11,011.90

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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.