Home / 28,693.35-39,585.74-21,157.52

Finding the Fourth Proportional to 28,693.35, 39,585.74 and 21,157.52

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Solution

The fourth proportional to 28,693.35, 39,585.74 and 21,157.52 is: 29,189.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693.35 : 39,585.74 = 21,157.52 : x
  2. Step 2: Convert to fraction form
    28,693.35/39,585.74 = 21,157.52/x
  3. Step 3: Cross multiply
    28,693.35x = 39,585.74 × 21,157.52
  4. Step 4: Simplify right side
    28,693.35x = 837,535,782.05
  5. Step 5: Solve for x
    x = 837,535,782.05/28,693.35
  6. Step 6: Final answer
    x = 29,189.19

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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.