Home / 39,048.51-53,887.30-21,143.89

Finding the Fourth Proportional to 39,048.51, 53,887.30 and 21,143.89

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Solution

The fourth proportional to 39,048.51, 53,887.30 and 21,143.89 is: 29,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,048.51 : 53,887.30 = 21,143.89 : x
  2. Step 2: Convert to fraction form
    39,048.51/53,887.30 = 21,143.89/x
  3. Step 3: Cross multiply
    39,048.51x = 53,887.30 × 21,143.89
  4. Step 4: Simplify right side
    39,048.51x = 1,139,386,914.45
  5. Step 5: Solve for x
    x = 1,139,386,914.45/39,048.51
  6. Step 6: Final answer
    x = 29,178.76

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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.