Home / 39,774.48-54,888.99-21,870.64

Finding the Fourth Proportional to 39,774.48, 54,888.99 and 21,870.64

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Solution

The fourth proportional to 39,774.48, 54,888.99 and 21,870.64 is: 30,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.48 : 54,888.99 = 21,870.64 : x
  2. Step 2: Convert to fraction form
    39,774.48/54,888.99 = 21,870.64/x
  3. Step 3: Cross multiply
    39,774.48x = 54,888.99 × 21,870.64
  4. Step 4: Simplify right side
    39,774.48x = 1,200,457,532.15
  5. Step 5: Solve for x
    x = 1,200,457,532.15/39,774.48
  6. Step 6: Final answer
    x = 30,181.60

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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.