Home / 21,888.29-30,409.77-21,625.85

Finding the Fourth Proportional to 21,888.29, 30,409.77 and 21,625.85

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Solution

The fourth proportional to 21,888.29, 30,409.77 and 21,625.85 is: 30,045.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.29 : 30,409.77 = 21,625.85 : x
  2. Step 2: Convert to fraction form
    21,888.29/30,409.77 = 21,625.85/x
  3. Step 3: Cross multiply
    21,888.29x = 30,409.77 × 21,625.85
  4. Step 4: Simplify right side
    21,888.29x = 657,637,124.55
  5. Step 5: Solve for x
    x = 657,637,124.55/21,888.29
  6. Step 6: Final answer
    x = 30,045.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.