Home / 28,325.48-39,089.63-15,579.23

Finding the Fourth Proportional to 28,325.48, 39,089.63 and 15,579.23

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Solution

The fourth proportional to 28,325.48, 39,089.63 and 15,579.23 is: 21,499.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.48 : 39,089.63 = 15,579.23 : x
  2. Step 2: Convert to fraction form
    28,325.48/39,089.63 = 15,579.23/x
  3. Step 3: Cross multiply
    28,325.48x = 39,089.63 × 15,579.23
  4. Step 4: Simplify right side
    28,325.48x = 608,986,179.88
  5. Step 5: Solve for x
    x = 608,986,179.88/28,325.48
  6. Step 6: Final answer
    x = 21,499.59

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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.