Home / 12,780.64-19,174.20-4,883.16

Finding the Fourth Proportional to 12,780.64, 19,174.20 and 4,883.16

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Solution

The fourth proportional to 12,780.64, 19,174.20 and 4,883.16 is: 7,325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.64 : 19,174.20 = 4,883.16 : x
  2. Step 2: Convert to fraction form
    12,780.64/19,174.20 = 4,883.16/x
  3. Step 3: Cross multiply
    12,780.64x = 19,174.20 × 4,883.16
  4. Step 4: Simplify right side
    12,780.64x = 93,630,686.47
  5. Step 5: Solve for x
    x = 93,630,686.47/12,780.64
  6. Step 6: Final answer
    x = 7,325.98

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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.