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Finding the Fourth Proportional to 18,887, 28,334.58 and 6,407.36

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Solution

The fourth proportional to 18,887, 28,334.58 and 6,407.36 is: 9,612.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887 : 28,334.58 = 6,407.36 : x
  2. Step 2: Convert to fraction form
    18,887/28,334.58 = 6,407.36/x
  3. Step 3: Cross multiply
    18,887x = 28,334.58 × 6,407.36
  4. Step 4: Simplify right side
    18,887x = 181,549,854.51
  5. Step 5: Solve for x
    x = 181,549,854.51/18,887
  6. Step 6: Final answer
    x = 9,612.42

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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.