Home / 15,828.16-21,844.32-9,114.40

Finding the Fourth Proportional to 15,828.16, 21,844.32 and 9,114.40

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Solution

The fourth proportional to 15,828.16, 21,844.32 and 9,114.40 is: 12,578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.16 : 21,844.32 = 9,114.40 : x
  2. Step 2: Convert to fraction form
    15,828.16/21,844.32 = 9,114.40/x
  3. Step 3: Cross multiply
    15,828.16x = 21,844.32 × 9,114.40
  4. Step 4: Simplify right side
    15,828.16x = 199,097,870.21
  5. Step 5: Solve for x
    x = 199,097,870.21/15,828.16
  6. Step 6: Final answer
    x = 12,578.71

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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.