Home / 20,647.70-28,495.81-11,574.59

Finding the Fourth Proportional to 20,647.70, 28,495.81 and 11,574.59

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Solution

The fourth proportional to 20,647.70, 28,495.81 and 11,574.59 is: 15,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.70 : 28,495.81 = 11,574.59 : x
  2. Step 2: Convert to fraction form
    20,647.70/28,495.81 = 11,574.59/x
  3. Step 3: Cross multiply
    20,647.70x = 28,495.81 × 11,574.59
  4. Step 4: Simplify right side
    20,647.70x = 329,827,317.47
  5. Step 5: Solve for x
    x = 329,827,317.47/20,647.70
  6. Step 6: Final answer
    x = 15,974.05

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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.