Home / 28,495.55-42,720.30-11,868.09

Finding the Fourth Proportional to 28,495.55, 42,720.30 and 11,868.09

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Solution

The fourth proportional to 28,495.55, 42,720.30 and 11,868.09 is: 17,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.55 : 42,720.30 = 11,868.09 : x
  2. Step 2: Convert to fraction form
    28,495.55/42,720.30 = 11,868.09/x
  3. Step 3: Cross multiply
    28,495.55x = 42,720.30 × 11,868.09
  4. Step 4: Simplify right side
    28,495.55x = 507,008,365.23
  5. Step 5: Solve for x
    x = 507,008,365.23/28,495.55
  6. Step 6: Final answer
    x = 17,792.55

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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.