Home / 12,825.65-19,240.50-5,430.16

Finding the Fourth Proportional to 12,825.65, 19,240.50 and 5,430.16

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Solution

The fourth proportional to 12,825.65, 19,240.50 and 5,430.16 is: 8,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.65 : 19,240.50 = 5,430.16 : x
  2. Step 2: Convert to fraction form
    12,825.65/19,240.50 = 5,430.16/x
  3. Step 3: Cross multiply
    12,825.65x = 19,240.50 × 5,430.16
  4. Step 4: Simplify right side
    12,825.65x = 104,478,897.28
  5. Step 5: Solve for x
    x = 104,478,897.28/12,825.65
  6. Step 6: Final answer
    x = 8,146.09

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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.