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Finding the Fourth Proportional to 18,860.94, 28,248.35 and 9,007.16

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Solution

The fourth proportional to 18,860.94, 28,248.35 and 9,007.16 is: 13,490.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.94 : 28,248.35 = 9,007.16 : x
  2. Step 2: Convert to fraction form
    18,860.94/28,248.35 = 9,007.16/x
  3. Step 3: Cross multiply
    18,860.94x = 28,248.35 × 9,007.16
  4. Step 4: Simplify right side
    18,860.94x = 254,437,408.19
  5. Step 5: Solve for x
    x = 254,437,408.19/18,860.94
  6. Step 6: Final answer
    x = 13,490.18

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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.