Home / 19,000.78-26,220.54-10,617.28

Finding the Fourth Proportional to 19,000.78, 26,220.54 and 10,617.28

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Solution

The fourth proportional to 19,000.78, 26,220.54 and 10,617.28 is: 14,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.78 : 26,220.54 = 10,617.28 : x
  2. Step 2: Convert to fraction form
    19,000.78/26,220.54 = 10,617.28/x
  3. Step 3: Cross multiply
    19,000.78x = 26,220.54 × 10,617.28
  4. Step 4: Simplify right side
    19,000.78x = 278,390,814.93
  5. Step 5: Solve for x
    x = 278,390,814.93/19,000.78
  6. Step 6: Final answer
    x = 14,651.55

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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.