Home / 28,181.04-42,271.55-7,121.14

Finding the Fourth Proportional to 28,181.04, 42,271.55 and 7,121.14

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Solution

The fourth proportional to 28,181.04, 42,271.55 and 7,121.14 is: 10,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.04 : 42,271.55 = 7,121.14 : x
  2. Step 2: Convert to fraction form
    28,181.04/42,271.55 = 7,121.14/x
  3. Step 3: Cross multiply
    28,181.04x = 42,271.55 × 7,121.14
  4. Step 4: Simplify right side
    28,181.04x = 301,021,378.60
  5. Step 5: Solve for x
    x = 301,021,378.60/28,181.04
  6. Step 6: Final answer
    x = 10,681.70

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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.