Home / 21,899.90-30,222.29-12,342.77

Finding the Fourth Proportional to 21,899.90, 30,222.29 and 12,342.77

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Solution

The fourth proportional to 21,899.90, 30,222.29 and 12,342.77 is: 17,033.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.90 : 30,222.29 = 12,342.77 : x
  2. Step 2: Convert to fraction form
    21,899.90/30,222.29 = 12,342.77/x
  3. Step 3: Cross multiply
    21,899.90x = 30,222.29 × 12,342.77
  4. Step 4: Simplify right side
    21,899.90x = 373,026,690.21
  5. Step 5: Solve for x
    x = 373,026,690.21/21,899.90
  6. Step 6: Final answer
    x = 17,033.26

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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.