Home / 13,838.49-19,097.16-7,870.58

Finding the Fourth Proportional to 13,838.49, 19,097.16 and 7,870.58

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Solution

The fourth proportional to 13,838.49, 19,097.16 and 7,870.58 is: 10,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.49 : 19,097.16 = 7,870.58 : x
  2. Step 2: Convert to fraction form
    13,838.49/19,097.16 = 7,870.58/x
  3. Step 3: Cross multiply
    13,838.49x = 19,097.16 × 7,870.58
  4. Step 4: Simplify right side
    13,838.49x = 150,305,630.07
  5. Step 5: Solve for x
    x = 150,305,630.07/13,838.49
  6. Step 6: Final answer
    x = 10,861.42

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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.