Home / 20,115.60-30,178.68-6,075.28

Finding the Fourth Proportional to 20,115.60, 30,178.68 and 6,075.28

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Solution

The fourth proportional to 20,115.60, 30,178.68 and 6,075.28 is: 9,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.60 : 30,178.68 = 6,075.28 : x
  2. Step 2: Convert to fraction form
    20,115.60/30,178.68 = 6,075.28/x
  3. Step 3: Cross multiply
    20,115.60x = 30,178.68 × 6,075.28
  4. Step 4: Simplify right side
    20,115.60x = 183,343,931.03
  5. Step 5: Solve for x
    x = 183,343,931.03/20,115.60
  6. Step 6: Final answer
    x = 9,114.51

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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.