Home / 30,868.21-42,598.08-16,721.05

Finding the Fourth Proportional to 30,868.21, 42,598.08 and 16,721.05

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Solution

The fourth proportional to 30,868.21, 42,598.08 and 16,721.05 is: 23,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.21 : 42,598.08 = 16,721.05 : x
  2. Step 2: Convert to fraction form
    30,868.21/42,598.08 = 16,721.05/x
  3. Step 3: Cross multiply
    30,868.21x = 42,598.08 × 16,721.05
  4. Step 4: Simplify right side
    30,868.21x = 712,284,625.58
  5. Step 5: Solve for x
    x = 712,284,625.58/30,868.21
  6. Step 6: Final answer
    x = 23,075.02

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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.