Home / 21,623.90-29,840.40-12,064.68

Finding the Fourth Proportional to 21,623.90, 29,840.40 and 12,064.68

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Solution

The fourth proportional to 21,623.90, 29,840.40 and 12,064.68 is: 16,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.90 : 29,840.40 = 12,064.68 : x
  2. Step 2: Convert to fraction form
    21,623.90/29,840.40 = 12,064.68/x
  3. Step 3: Cross multiply
    21,623.90x = 29,840.40 × 12,064.68
  4. Step 4: Simplify right side
    21,623.90x = 360,014,877.07
  5. Step 5: Solve for x
    x = 360,014,877.07/21,623.90
  6. Step 6: Final answer
    x = 16,648.94

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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.