Home / 12,977.21-19,463.09-4,657.70

Finding the Fourth Proportional to 12,977.21, 19,463.09 and 4,657.70

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Solution

The fourth proportional to 12,977.21, 19,463.09 and 4,657.70 is: 6,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.21 : 19,463.09 = 4,657.70 : x
  2. Step 2: Convert to fraction form
    12,977.21/19,463.09 = 4,657.70/x
  3. Step 3: Cross multiply
    12,977.21x = 19,463.09 × 4,657.70
  4. Step 4: Simplify right side
    12,977.21x = 90,653,259.66
  5. Step 5: Solve for x
    x = 90,653,259.66/12,977.21
  6. Step 6: Final answer
    x = 6,985.57

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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.