Home / 30,868.33-42,598.15-16,721.21

Finding the Fourth Proportional to 30,868.33, 42,598.15 and 16,721.21

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Solution

The fourth proportional to 30,868.33, 42,598.15 and 16,721.21 is: 23,075.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.33 : 42,598.15 = 16,721.21 : x
  2. Step 2: Convert to fraction form
    30,868.33/42,598.15 = 16,721.21/x
  3. Step 3: Cross multiply
    30,868.33x = 42,598.15 × 16,721.21
  4. Step 4: Simplify right side
    30,868.33x = 712,292,611.76
  5. Step 5: Solve for x
    x = 712,292,611.76/30,868.33
  6. Step 6: Final answer
    x = 23,075.19

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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.