Home / 10,415.20-14,372.40-5,698.56

Finding the Fourth Proportional to 10,415.20, 14,372.40 and 5,698.56

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Solution

The fourth proportional to 10,415.20, 14,372.40 and 5,698.56 is: 7,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,415.20 : 14,372.40 = 5,698.56 : x
  2. Step 2: Convert to fraction form
    10,415.20/14,372.40 = 5,698.56/x
  3. Step 3: Cross multiply
    10,415.20x = 14,372.40 × 5,698.56
  4. Step 4: Simplify right side
    10,415.20x = 81,901,983.74
  5. Step 5: Solve for x
    x = 81,901,983.74/10,415.20
  6. Step 6: Final answer
    x = 7,863.70

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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.