Home / 15,392.81-21,237.08-9,418.25

Finding the Fourth Proportional to 15,392.81, 21,237.08 and 9,418.25

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Solution

The fourth proportional to 15,392.81, 21,237.08 and 9,418.25 is: 12,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,392.81 : 21,237.08 = 9,418.25 : x
  2. Step 2: Convert to fraction form
    15,392.81/21,237.08 = 9,418.25/x
  3. Step 3: Cross multiply
    15,392.81x = 21,237.08 × 9,418.25
  4. Step 4: Simplify right side
    15,392.81x = 200,015,975.43
  5. Step 5: Solve for x
    x = 200,015,975.43/15,392.81
  6. Step 6: Final answer
    x = 12,994.12

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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.