Home / 19,128.65-28,693.93-13,566.11

Finding the Fourth Proportional to 19,128.65, 28,693.93 and 13,566.11

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Solution

The fourth proportional to 19,128.65, 28,693.93 and 13,566.11 is: 20,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.65 : 28,693.93 = 13,566.11 : x
  2. Step 2: Convert to fraction form
    19,128.65/28,693.93 = 13,566.11/x
  3. Step 3: Cross multiply
    19,128.65x = 28,693.93 × 13,566.11
  4. Step 4: Simplify right side
    19,128.65x = 389,264,867.24
  5. Step 5: Solve for x
    x = 389,264,867.24/19,128.65
  6. Step 6: Final answer
    x = 20,349.84

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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.