Home / 28,325.75-39,090.49-15,579.47

Finding the Fourth Proportional to 28,325.75, 39,090.49 and 15,579.47

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Solution

The fourth proportional to 28,325.75, 39,090.49 and 15,579.47 is: 21,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.75 : 39,090.49 = 15,579.47 : x
  2. Step 2: Convert to fraction form
    28,325.75/39,090.49 = 15,579.47/x
  3. Step 3: Cross multiply
    28,325.75x = 39,090.49 × 15,579.47
  4. Step 4: Simplify right side
    28,325.75x = 609,009,119.95
  5. Step 5: Solve for x
    x = 609,009,119.95/28,325.75
  6. Step 6: Final answer
    x = 21,500.19

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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.