Home / 13,926.13-19,217.81-7,876.28

Finding the Fourth Proportional to 13,926.13, 19,217.81 and 7,876.28

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Solution

The fourth proportional to 13,926.13, 19,217.81 and 7,876.28 is: 10,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.13 : 19,217.81 = 7,876.28 : x
  2. Step 2: Convert to fraction form
    13,926.13/19,217.81 = 7,876.28/x
  3. Step 3: Cross multiply
    13,926.13x = 19,217.81 × 7,876.28
  4. Step 4: Simplify right side
    13,926.13x = 151,364,852.55
  5. Step 5: Solve for x
    x = 151,364,852.55/13,926.13
  6. Step 6: Final answer
    x = 10,869.13

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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.