Home / 12,977.60-19,466.40-3,617.60

Finding the Fourth Proportional to 12,977.60, 19,466.40 and 3,617.60

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Solution

The fourth proportional to 12,977.60, 19,466.40 and 3,617.60 is: 5,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.60 : 19,466.40 = 3,617.60 : x
  2. Step 2: Convert to fraction form
    12,977.60/19,466.40 = 3,617.60/x
  3. Step 3: Cross multiply
    12,977.60x = 19,466.40 × 3,617.60
  4. Step 4: Simplify right side
    12,977.60x = 70,421,648.64
  5. Step 5: Solve for x
    x = 70,421,648.64/12,977.60
  6. Step 6: Final answer
    x = 5,426.40

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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.