Home / 39,458.53-54,454.08-21,555.20

Finding the Fourth Proportional to 39,458.53, 54,454.08 and 21,555.20

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Solution

The fourth proportional to 39,458.53, 54,454.08 and 21,555.20 is: 29,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.53 : 54,454.08 = 21,555.20 : x
  2. Step 2: Convert to fraction form
    39,458.53/54,454.08 = 21,555.20/x
  3. Step 3: Cross multiply
    39,458.53x = 54,454.08 × 21,555.20
  4. Step 4: Simplify right side
    39,458.53x = 1,173,768,477.44
  5. Step 5: Solve for x
    x = 1,173,768,477.44/39,458.53
  6. Step 6: Final answer
    x = 29,746.89

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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.