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Finding the Fourth Proportional to 13,055.78, 19,607.81 and 6,820.07

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Solution

The fourth proportional to 13,055.78, 19,607.81 and 6,820.07 is: 10,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.78 : 19,607.81 = 6,820.07 : x
  2. Step 2: Convert to fraction form
    13,055.78/19,607.81 = 6,820.07/x
  3. Step 3: Cross multiply
    13,055.78x = 19,607.81 × 6,820.07
  4. Step 4: Simplify right side
    13,055.78x = 133,726,504.61
  5. Step 5: Solve for x
    x = 133,726,504.61/13,055.78
  6. Step 6: Final answer
    x = 10,242.70

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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.