Home / 13,857.84-19,124.70-7,890.03

Finding the Fourth Proportional to 13,857.84, 19,124.70 and 7,890.03

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Solution

The fourth proportional to 13,857.84, 19,124.70 and 7,890.03 is: 10,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.84 : 19,124.70 = 7,890.03 : x
  2. Step 2: Convert to fraction form
    13,857.84/19,124.70 = 7,890.03/x
  3. Step 3: Cross multiply
    13,857.84x = 19,124.70 × 7,890.03
  4. Step 4: Simplify right side
    13,857.84x = 150,894,456.74
  5. Step 5: Solve for x
    x = 150,894,456.74/13,857.84
  6. Step 6: Final answer
    x = 10,888.74

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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.