Home / 28,299.70-39,057.96-20,368.18

Finding the Fourth Proportional to 28,299.70, 39,057.96 and 20,368.18

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Solution

The fourth proportional to 28,299.70, 39,057.96 and 20,368.18 is: 28,111.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.70 : 39,057.96 = 20,368.18 : x
  2. Step 2: Convert to fraction form
    28,299.70/39,057.96 = 20,368.18/x
  3. Step 3: Cross multiply
    28,299.70x = 39,057.96 × 20,368.18
  4. Step 4: Simplify right side
    28,299.70x = 795,539,559.71
  5. Step 5: Solve for x
    x = 795,539,559.71/28,299.70
  6. Step 6: Final answer
    x = 28,111.24

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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.