Home / 13,782.05-19,023.56-8,116.40

Finding the Fourth Proportional to 13,782.05, 19,023.56 and 8,116.40

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Solution

The fourth proportional to 13,782.05, 19,023.56 and 8,116.40 is: 11,203.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.05 : 19,023.56 = 8,116.40 : x
  2. Step 2: Convert to fraction form
    13,782.05/19,023.56 = 8,116.40/x
  3. Step 3: Cross multiply
    13,782.05x = 19,023.56 × 8,116.40
  4. Step 4: Simplify right side
    13,782.05x = 154,402,859.80
  5. Step 5: Solve for x
    x = 154,402,859.80/13,782.05
  6. Step 6: Final answer
    x = 11,203.19

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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.