Home / 18,898.90-28,279.02-15,771.19

Finding the Fourth Proportional to 18,898.90, 28,279.02 and 15,771.19

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Solution

The fourth proportional to 18,898.90, 28,279.02 and 15,771.19 is: 23,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.90 : 28,279.02 = 15,771.19 : x
  2. Step 2: Convert to fraction form
    18,898.90/28,279.02 = 15,771.19/x
  3. Step 3: Cross multiply
    18,898.90x = 28,279.02 × 15,771.19
  4. Step 4: Simplify right side
    18,898.90x = 445,993,838.90
  5. Step 5: Solve for x
    x = 445,993,838.90/18,898.90
  6. Step 6: Final answer
    x = 23,598.93

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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.