Home / 22,913.44-31,618.98-12,840.16

Finding the Fourth Proportional to 22,913.44, 31,618.98 and 12,840.16

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Solution

The fourth proportional to 22,913.44, 31,618.98 and 12,840.16 is: 17,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,913.44 : 31,618.98 = 12,840.16 : x
  2. Step 2: Convert to fraction form
    22,913.44/31,618.98 = 12,840.16/x
  3. Step 3: Cross multiply
    22,913.44x = 31,618.98 × 12,840.16
  4. Step 4: Simplify right side
    22,913.44x = 405,992,762.24
  5. Step 5: Solve for x
    x = 405,992,762.24/22,913.44
  6. Step 6: Final answer
    x = 17,718.54

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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.