Home / 13,869.01-19,139.24-7,904.14

Finding the Fourth Proportional to 13,869.01, 19,139.24 and 7,904.14

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Solution

The fourth proportional to 13,869.01, 19,139.24 and 7,904.14 is: 10,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.01 : 19,139.24 = 7,904.14 : x
  2. Step 2: Convert to fraction form
    13,869.01/19,139.24 = 7,904.14/x
  3. Step 3: Cross multiply
    13,869.01x = 19,139.24 × 7,904.14
  4. Step 4: Simplify right side
    13,869.01x = 151,279,232.45
  5. Step 5: Solve for x
    x = 151,279,232.45/13,869.01
  6. Step 6: Final answer
    x = 10,907.72

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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.