Home / 30,177.70-45,271.60-12,648.86

Finding the Fourth Proportional to 30,177.70, 45,271.60 and 12,648.86

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Solution

The fourth proportional to 30,177.70, 45,271.60 and 12,648.86 is: 18,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,177.70 : 45,271.60 = 12,648.86 : x
  2. Step 2: Convert to fraction form
    30,177.70/45,271.60 = 12,648.86/x
  3. Step 3: Cross multiply
    30,177.70x = 45,271.60 × 12,648.86
  4. Step 4: Simplify right side
    30,177.70x = 572,634,130.38
  5. Step 5: Solve for x
    x = 572,634,130.38/30,177.70
  6. Step 6: Final answer
    x = 18,975.41

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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.