Home / 13,877.71-19,151.93-8,215.70

Finding the Fourth Proportional to 13,877.71, 19,151.93 and 8,215.70

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Solution

The fourth proportional to 13,877.71, 19,151.93 and 8,215.70 is: 11,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.71 : 19,151.93 = 8,215.70 : x
  2. Step 2: Convert to fraction form
    13,877.71/19,151.93 = 8,215.70/x
  3. Step 3: Cross multiply
    13,877.71x = 19,151.93 × 8,215.70
  4. Step 4: Simplify right side
    13,877.71x = 157,346,579.72
  5. Step 5: Solve for x
    x = 157,346,579.72/13,877.71
  6. Step 6: Final answer
    x = 11,338.08

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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.