Home / 13,830.90-19,088.26-7,863.47

Finding the Fourth Proportional to 13,830.90, 19,088.26 and 7,863.47

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Solution

The fourth proportional to 13,830.90, 19,088.26 and 7,863.47 is: 10,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.90 : 19,088.26 = 7,863.47 : x
  2. Step 2: Convert to fraction form
    13,830.90/19,088.26 = 7,863.47/x
  3. Step 3: Cross multiply
    13,830.90x = 19,088.26 × 7,863.47
  4. Step 4: Simplify right side
    13,830.90x = 150,099,959.86
  5. Step 5: Solve for x
    x = 150,099,959.86/13,830.90
  6. Step 6: Final answer
    x = 10,852.51

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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.