Home / 19,618.78-29,430.24-6,471.22

Finding the Fourth Proportional to 19,618.78, 29,430.24 and 6,471.22

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Solution

The fourth proportional to 19,618.78, 29,430.24 and 6,471.22 is: 9,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.78 : 29,430.24 = 6,471.22 : x
  2. Step 2: Convert to fraction form
    19,618.78/29,430.24 = 6,471.22/x
  3. Step 3: Cross multiply
    19,618.78x = 29,430.24 × 6,471.22
  4. Step 4: Simplify right side
    19,618.78x = 190,449,557.69
  5. Step 5: Solve for x
    x = 190,449,557.69/19,618.78
  6. Step 6: Final answer
    x = 9,707.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.