Home / 39,029.04-53,860.05-21,123.99

Finding the Fourth Proportional to 39,029.04, 53,860.05 and 21,123.99

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Solution

The fourth proportional to 39,029.04, 53,860.05 and 21,123.99 is: 29,151.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,029.04 : 53,860.05 = 21,123.99 : x
  2. Step 2: Convert to fraction form
    39,029.04/53,860.05 = 21,123.99/x
  3. Step 3: Cross multiply
    39,029.04x = 53,860.05 × 21,123.99
  4. Step 4: Simplify right side
    39,029.04x = 1,137,739,157.60
  5. Step 5: Solve for x
    x = 1,137,739,157.60/39,029.04
  6. Step 6: Final answer
    x = 29,151.09

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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.