Home / 18,990.98-26,172.75-12,606.29

Finding the Fourth Proportional to 18,990.98, 26,172.75 and 12,606.29

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Solution

The fourth proportional to 18,990.98, 26,172.75 and 12,606.29 is: 17,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.98 : 26,172.75 = 12,606.29 : x
  2. Step 2: Convert to fraction form
    18,990.98/26,172.75 = 12,606.29/x
  3. Step 3: Cross multiply
    18,990.98x = 26,172.75 × 12,606.29
  4. Step 4: Simplify right side
    18,990.98x = 329,941,276.60
  5. Step 5: Solve for x
    x = 329,941,276.60/18,990.98
  6. Step 6: Final answer
    x = 17,373.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.