Home / 14,265.36-19,686.30-7,977.78

Finding the Fourth Proportional to 14,265.36, 19,686.30 and 7,977.78

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Solution

The fourth proportional to 14,265.36, 19,686.30 and 7,977.78 is: 11,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,265.36 : 19,686.30 = 7,977.78 : x
  2. Step 2: Convert to fraction form
    14,265.36/19,686.30 = 7,977.78/x
  3. Step 3: Cross multiply
    14,265.36x = 19,686.30 × 7,977.78
  4. Step 4: Simplify right side
    14,265.36x = 157,052,970.41
  5. Step 5: Solve for x
    x = 157,052,970.41/14,265.36
  6. Step 6: Final answer
    x = 11,009.39

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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.