Home / 13,643,389.28-18,826,745.28-7,761,458.46

Finding the Fourth Proportional to 13,643,389.28, 18,826,745.28 and 7,761,458.46

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Solution

The fourth proportional to 13,643,389.28, 18,826,745.28 and 7,761,458.46 is: 10,710,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643,389.28 : 18,826,745.28 = 7,761,458.46 : x
  2. Step 2: Convert to fraction form
    13,643,389.28/18,826,745.28 = 7,761,458.46/x
  3. Step 3: Cross multiply
    13,643,389.28x = 18,826,745.28 × 7,761,458.46
  4. Step 4: Simplify right side
    13,643,389.28x = 146,123,001,427,721.06
  5. Step 5: Solve for x
    x = 146,123,001,427,721.06/13,643,389.28
  6. Step 6: Final answer
    x = 10,710,168.74

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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.