Home / 13,869.28-19,139.44-7,901.31

Finding the Fourth Proportional to 13,869.28, 19,139.44 and 7,901.31

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Solution

The fourth proportional to 13,869.28, 19,139.44 and 7,901.31 is: 10,903.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.28 : 19,139.44 = 7,901.31 : x
  2. Step 2: Convert to fraction form
    13,869.28/19,139.44 = 7,901.31/x
  3. Step 3: Cross multiply
    13,869.28x = 19,139.44 × 7,901.31
  4. Step 4: Simplify right side
    13,869.28x = 151,226,648.67
  5. Step 5: Solve for x
    x = 151,226,648.67/13,869.28
  6. Step 6: Final answer
    x = 10,903.71

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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.