Home / 22,762.80-31,410.37-12,690.30

Finding the Fourth Proportional to 22,762.80, 31,410.37 and 12,690.30

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Solution

The fourth proportional to 22,762.80, 31,410.37 and 12,690.30 is: 17,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,762.80 : 31,410.37 = 12,690.30 : x
  2. Step 2: Convert to fraction form
    22,762.80/31,410.37 = 12,690.30/x
  3. Step 3: Cross multiply
    22,762.80x = 31,410.37 × 12,690.30
  4. Step 4: Simplify right side
    22,762.80x = 398,606,869.19
  5. Step 5: Solve for x
    x = 398,606,869.19/22,762.80
  6. Step 6: Final answer
    x = 17,511.33

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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.