Home / 39,045.83-53,882.60-21,140.69

Finding the Fourth Proportional to 39,045.83, 53,882.60 and 21,140.69

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Solution

The fourth proportional to 39,045.83, 53,882.60 and 21,140.69 is: 29,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,045.83 : 53,882.60 = 21,140.69 : x
  2. Step 2: Convert to fraction form
    39,045.83/53,882.60 = 21,140.69/x
  3. Step 3: Cross multiply
    39,045.83x = 53,882.60 × 21,140.69
  4. Step 4: Simplify right side
    39,045.83x = 1,139,114,967.88
  5. Step 5: Solve for x
    x = 1,139,114,967.88/39,045.83
  6. Step 6: Final answer
    x = 29,173.80

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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.