Home / 28,647.59-42,971.22-15,582.99

Finding the Fourth Proportional to 28,647.59, 42,971.22 and 15,582.99

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Solution

The fourth proportional to 28,647.59, 42,971.22 and 15,582.99 is: 23,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.59 : 42,971.22 = 15,582.99 : x
  2. Step 2: Convert to fraction form
    28,647.59/42,971.22 = 15,582.99/x
  3. Step 3: Cross multiply
    28,647.59x = 42,971.22 × 15,582.99
  4. Step 4: Simplify right side
    28,647.59x = 669,620,091.55
  5. Step 5: Solve for x
    x = 669,620,091.55/28,647.59
  6. Step 6: Final answer
    x = 23,374.40

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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.