Home / 39,050.68-53,890-21,145.84

Finding the Fourth Proportional to 39,050.68, 53,890 and 21,145.84

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Solution

The fourth proportional to 39,050.68, 53,890 and 21,145.84 is: 29,181.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,050.68 : 53,890 = 21,145.84 : x
  2. Step 2: Convert to fraction form
    39,050.68/53,890 = 21,145.84/x
  3. Step 3: Cross multiply
    39,050.68x = 53,890 × 21,145.84
  4. Step 4: Simplify right side
    39,050.68x = 1,139,549,317.60
  5. Step 5: Solve for x
    x = 1,139,549,317.60/39,050.68
  6. Step 6: Final answer
    x = 29,181.29

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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.