Home / 19,485.79-26,893.89-10,990.51

Finding the Fourth Proportional to 19,485.79, 26,893.89 and 10,990.51

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Solution

The fourth proportional to 19,485.79, 26,893.89 and 10,990.51 is: 15,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.79 : 26,893.89 = 10,990.51 : x
  2. Step 2: Convert to fraction form
    19,485.79/26,893.89 = 10,990.51/x
  3. Step 3: Cross multiply
    19,485.79x = 26,893.89 × 10,990.51
  4. Step 4: Simplify right side
    19,485.79x = 295,577,566.98
  5. Step 5: Solve for x
    x = 295,577,566.98/19,485.79
  6. Step 6: Final answer
    x = 15,168.88

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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.