Home / 30,868.70-42,598.71-16,721.51

Finding the Fourth Proportional to 30,868.70, 42,598.71 and 16,721.51

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Solution

The fourth proportional to 30,868.70, 42,598.71 and 16,721.51 is: 23,075.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.70 : 42,598.71 = 16,721.51 : x
  2. Step 2: Convert to fraction form
    30,868.70/42,598.71 = 16,721.51/x
  3. Step 3: Cross multiply
    30,868.70x = 42,598.71 × 16,721.51
  4. Step 4: Simplify right side
    30,868.70x = 712,314,542.26
  5. Step 5: Solve for x
    x = 712,314,542.26/30,868.70
  6. Step 6: Final answer
    x = 23,075.63

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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.