Home / 12,980.84-19,427.10-8,810.60

Finding the Fourth Proportional to 12,980.84, 19,427.10 and 8,810.60

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Solution

The fourth proportional to 12,980.84, 19,427.10 and 8,810.60 is: 13,185.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.84 : 19,427.10 = 8,810.60 : x
  2. Step 2: Convert to fraction form
    12,980.84/19,427.10 = 8,810.60/x
  3. Step 3: Cross multiply
    12,980.84x = 19,427.10 × 8,810.60
  4. Step 4: Simplify right side
    12,980.84x = 171,164,407.26
  5. Step 5: Solve for x
    x = 171,164,407.26/12,980.84
  6. Step 6: Final answer
    x = 13,185.93

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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.