Home / 13,860.03-19,124.01-7,890.13

Finding the Fourth Proportional to 13,860.03, 19,124.01 and 7,890.13

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Solution

The fourth proportional to 13,860.03, 19,124.01 and 7,890.13 is: 10,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.03 : 19,124.01 = 7,890.13 : x
  2. Step 2: Convert to fraction form
    13,860.03/19,124.01 = 7,890.13/x
  3. Step 3: Cross multiply
    13,860.03x = 19,124.01 × 7,890.13
  4. Step 4: Simplify right side
    13,860.03x = 150,890,948.93
  5. Step 5: Solve for x
    x = 150,890,948.93/13,860.03
  6. Step 6: Final answer
    x = 10,886.77

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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.