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Finding the Fourth Proportional to 20,075.77, 30,127.47 and 6,928.14

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Solution

The fourth proportional to 20,075.77, 30,127.47 and 6,928.14 is: 10,396.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.77 : 30,127.47 = 6,928.14 : x
  2. Step 2: Convert to fraction form
    20,075.77/30,127.47 = 6,928.14/x
  3. Step 3: Cross multiply
    20,075.77x = 30,127.47 × 6,928.14
  4. Step 4: Simplify right side
    20,075.77x = 208,727,330.01
  5. Step 5: Solve for x
    x = 208,727,330.01/20,075.77
  6. Step 6: Final answer
    x = 10,396.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.