Home / 14,265.40-19,687.14-7,977.76

Finding the Fourth Proportional to 14,265.40, 19,687.14 and 7,977.76

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Solution

The fourth proportional to 14,265.40, 19,687.14 and 7,977.76 is: 11,009.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,265.40 : 19,687.14 = 7,977.76 : x
  2. Step 2: Convert to fraction form
    14,265.40/19,687.14 = 7,977.76/x
  3. Step 3: Cross multiply
    14,265.40x = 19,687.14 × 7,977.76
  4. Step 4: Simplify right side
    14,265.40x = 157,059,278.01
  5. Step 5: Solve for x
    x = 157,059,278.01/14,265.40
  6. Step 6: Final answer
    x = 11,009.81

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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.