Home / 20,317.10-28,037.06-11,365.59

Finding the Fourth Proportional to 20,317.10, 28,037.06 and 11,365.59

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Solution

The fourth proportional to 20,317.10, 28,037.06 and 11,365.59 is: 15,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.10 : 28,037.06 = 11,365.59 : x
  2. Step 2: Convert to fraction form
    20,317.10/28,037.06 = 11,365.59/x
  3. Step 3: Cross multiply
    20,317.10x = 28,037.06 × 11,365.59
  4. Step 4: Simplify right side
    20,317.10x = 318,657,728.77
  5. Step 5: Solve for x
    x = 318,657,728.77/20,317.10
  6. Step 6: Final answer
    x = 15,684.21

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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.