Home / 20,317.19-28,037.21-11,365.07

Finding the Fourth Proportional to 20,317.19, 28,037.21 and 11,365.07

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Solution

The fourth proportional to 20,317.19, 28,037.21 and 11,365.07 is: 15,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.19 : 28,037.21 = 11,365.07 : x
  2. Step 2: Convert to fraction form
    20,317.19/28,037.21 = 11,365.07/x
  3. Step 3: Cross multiply
    20,317.19x = 28,037.21 × 11,365.07
  4. Step 4: Simplify right side
    20,317.19x = 318,644,657.24
  5. Step 5: Solve for x
    x = 318,644,657.24/20,317.19
  6. Step 6: Final answer
    x = 15,683.50

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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.