Home / 39,038.99-53,873.79-21,133.98

Finding the Fourth Proportional to 39,038.99, 53,873.79 and 21,133.98

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Solution

The fourth proportional to 39,038.99, 53,873.79 and 21,133.98 is: 29,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.99 : 53,873.79 = 21,133.98 : x
  2. Step 2: Convert to fraction form
    39,038.99/53,873.79 = 21,133.98/x
  3. Step 3: Cross multiply
    39,038.99x = 53,873.79 × 21,133.98
  4. Step 4: Simplify right side
    39,038.99x = 1,138,567,600.38
  5. Step 5: Solve for x
    x = 1,138,567,600.38/39,038.99
  6. Step 6: Final answer
    x = 29,164.89

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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.