Home / 14,259.78-21,389.70-5,025.78

Finding the Fourth Proportional to 14,259.78, 21,389.70 and 5,025.78

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Solution

The fourth proportional to 14,259.78, 21,389.70 and 5,025.78 is: 7,538.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,259.78 : 21,389.70 = 5,025.78 : x
  2. Step 2: Convert to fraction form
    14,259.78/21,389.70 = 5,025.78/x
  3. Step 3: Cross multiply
    14,259.78x = 21,389.70 × 5,025.78
  4. Step 4: Simplify right side
    14,259.78x = 107,499,926.47
  5. Step 5: Solve for x
    x = 107,499,926.47/14,259.78
  6. Step 6: Final answer
    x = 7,538.68

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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.