Home / 22,745.79-31,389.12-12,674.16

Finding the Fourth Proportional to 22,745.79, 31,389.12 and 12,674.16

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Solution

The fourth proportional to 22,745.79, 31,389.12 and 12,674.16 is: 17,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,745.79 : 31,389.12 = 12,674.16 : x
  2. Step 2: Convert to fraction form
    22,745.79/31,389.12 = 12,674.16/x
  3. Step 3: Cross multiply
    22,745.79x = 31,389.12 × 12,674.16
  4. Step 4: Simplify right side
    22,745.79x = 397,830,729.14
  5. Step 5: Solve for x
    x = 397,830,729.14/22,745.79
  6. Step 6: Final answer
    x = 17,490.30

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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.