Home / 18,935.90-26,129.40-10,976.48

Finding the Fourth Proportional to 18,935.90, 26,129.40 and 10,976.48

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Solution

The fourth proportional to 18,935.90, 26,129.40 and 10,976.48 is: 15,146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.90 : 26,129.40 = 10,976.48 : x
  2. Step 2: Convert to fraction form
    18,935.90/26,129.40 = 10,976.48/x
  3. Step 3: Cross multiply
    18,935.90x = 26,129.40 × 10,976.48
  4. Step 4: Simplify right side
    18,935.90x = 286,808,836.51
  5. Step 5: Solve for x
    x = 286,808,836.51/18,935.90
  6. Step 6: Final answer
    x = 15,146.30

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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.