Home / 20,298.81-28,012.47-11,346.69

Finding the Fourth Proportional to 20,298.81, 28,012.47 and 11,346.69

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Solution

The fourth proportional to 20,298.81, 28,012.47 and 11,346.69 is: 15,658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.81 : 28,012.47 = 11,346.69 : x
  2. Step 2: Convert to fraction form
    20,298.81/28,012.47 = 11,346.69/x
  3. Step 3: Cross multiply
    20,298.81x = 28,012.47 × 11,346.69
  4. Step 4: Simplify right side
    20,298.81x = 317,848,813.22
  5. Step 5: Solve for x
    x = 317,848,813.22/20,298.81
  6. Step 6: Final answer
    x = 15,658.49

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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.