Home / 19,325.16-26,679.78-12,720.36

Finding the Fourth Proportional to 19,325.16, 26,679.78 and 12,720.36

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Solution

The fourth proportional to 19,325.16, 26,679.78 and 12,720.36 is: 17,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.16 : 26,679.78 = 12,720.36 : x
  2. Step 2: Convert to fraction form
    19,325.16/26,679.78 = 12,720.36/x
  3. Step 3: Cross multiply
    19,325.16x = 26,679.78 × 12,720.36
  4. Step 4: Simplify right side
    19,325.16x = 339,376,406.32
  5. Step 5: Solve for x
    x = 339,376,406.32/19,325.16
  6. Step 6: Final answer
    x = 17,561.38

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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.