Home / 19,478.23-29,194.28-8,939.37

Finding the Fourth Proportional to 19,478.23, 29,194.28 and 8,939.37

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Solution

The fourth proportional to 19,478.23, 29,194.28 and 8,939.37 is: 13,398.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.23 : 29,194.28 = 8,939.37 : x
  2. Step 2: Convert to fraction form
    19,478.23/29,194.28 = 8,939.37/x
  3. Step 3: Cross multiply
    19,478.23x = 29,194.28 × 8,939.37
  4. Step 4: Simplify right side
    19,478.23x = 260,978,569.11
  5. Step 5: Solve for x
    x = 260,978,569.11/19,478.23
  6. Step 6: Final answer
    x = 13,398.47

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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.