Home / 13,781.39-19,018.23-7,493.76

Finding the Fourth Proportional to 13,781.39, 19,018.23 and 7,493.76

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Solution

The fourth proportional to 13,781.39, 19,018.23 and 7,493.76 is: 10,341.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.39 : 19,018.23 = 7,493.76 : x
  2. Step 2: Convert to fraction form
    13,781.39/19,018.23 = 7,493.76/x
  3. Step 3: Cross multiply
    13,781.39x = 19,018.23 × 7,493.76
  4. Step 4: Simplify right side
    13,781.39x = 142,518,051.24
  5. Step 5: Solve for x
    x = 142,518,051.24/13,781.39
  6. Step 6: Final answer
    x = 10,341.34

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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.