Home / 14,186.19-21,280.74-5,428.47

Finding the Fourth Proportional to 14,186.19, 21,280.74 and 5,428.47

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Solution

The fourth proportional to 14,186.19, 21,280.74 and 5,428.47 is: 8,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.19 : 21,280.74 = 5,428.47 : x
  2. Step 2: Convert to fraction form
    14,186.19/21,280.74 = 5,428.47/x
  3. Step 3: Cross multiply
    14,186.19x = 21,280.74 × 5,428.47
  4. Step 4: Simplify right side
    14,186.19x = 115,521,858.67
  5. Step 5: Solve for x
    x = 115,521,858.67/14,186.19
  6. Step 6: Final answer
    x = 8,143.26

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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.