Home / 38,889.09-53,663.76-21,887.91

Finding the Fourth Proportional to 38,889.09, 53,663.76 and 21,887.91

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Solution

The fourth proportional to 38,889.09, 53,663.76 and 21,887.91 is: 30,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,889.09 : 53,663.76 = 21,887.91 : x
  2. Step 2: Convert to fraction form
    38,889.09/53,663.76 = 21,887.91/x
  3. Step 3: Cross multiply
    38,889.09x = 53,663.76 × 21,887.91
  4. Step 4: Simplify right side
    38,889.09x = 1,174,587,549.14
  5. Step 5: Solve for x
    x = 1,174,587,549.14/38,889.09
  6. Step 6: Final answer
    x = 30,203.52

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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.