Home / 12,728.48-19,098.18-9,054.32

Finding the Fourth Proportional to 12,728.48, 19,098.18 and 9,054.32

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Solution

The fourth proportional to 12,728.48, 19,098.18 and 9,054.32 is: 13,585.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.48 : 19,098.18 = 9,054.32 : x
  2. Step 2: Convert to fraction form
    12,728.48/19,098.18 = 9,054.32/x
  3. Step 3: Cross multiply
    12,728.48x = 19,098.18 × 9,054.32
  4. Step 4: Simplify right side
    12,728.48x = 172,920,937.65
  5. Step 5: Solve for x
    x = 172,920,937.65/12,728.48
  6. Step 6: Final answer
    x = 13,585.36

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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.