Home / 13,870.31-19,140.99-7,901.99

Finding the Fourth Proportional to 13,870.31, 19,140.99 and 7,901.99

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Solution

The fourth proportional to 13,870.31, 19,140.99 and 7,901.99 is: 10,904.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.31 : 19,140.99 = 7,901.99 : x
  2. Step 2: Convert to fraction form
    13,870.31/19,140.99 = 7,901.99/x
  3. Step 3: Cross multiply
    13,870.31x = 19,140.99 × 7,901.99
  4. Step 4: Simplify right side
    13,870.31x = 151,251,911.57
  5. Step 5: Solve for x
    x = 151,251,911.57/13,870.31
  6. Step 6: Final answer
    x = 10,904.72

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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.