Home / 19,438.40-26,821.23-10,939.39

Finding the Fourth Proportional to 19,438.40, 26,821.23 and 10,939.39

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Solution

The fourth proportional to 19,438.40, 26,821.23 and 10,939.39 is: 15,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.40 : 26,821.23 = 10,939.39 : x
  2. Step 2: Convert to fraction form
    19,438.40/26,821.23 = 10,939.39/x
  3. Step 3: Cross multiply
    19,438.40x = 26,821.23 × 10,939.39
  4. Step 4: Simplify right side
    19,438.40x = 293,407,895.25
  5. Step 5: Solve for x
    x = 293,407,895.25/19,438.40
  6. Step 6: Final answer
    x = 15,094.24

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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.