Home / 15,356.63-21,193.99-9,389.16

Finding the Fourth Proportional to 15,356.63, 21,193.99 and 9,389.16

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Solution

The fourth proportional to 15,356.63, 21,193.99 and 9,389.16 is: 12,958.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.63 : 21,193.99 = 9,389.16 : x
  2. Step 2: Convert to fraction form
    15,356.63/21,193.99 = 9,389.16/x
  3. Step 3: Cross multiply
    15,356.63x = 21,193.99 × 9,389.16
  4. Step 4: Simplify right side
    15,356.63x = 198,993,739.68
  5. Step 5: Solve for x
    x = 198,993,739.68/15,356.63
  6. Step 6: Final answer
    x = 12,958.16

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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.