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Finding the Fourth Proportional to 38,993.52, 53,810.86 and 21,088.48

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Solution

The fourth proportional to 38,993.52, 53,810.86 and 21,088.48 is: 29,102.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,993.52 : 53,810.86 = 21,088.48 : x
  2. Step 2: Convert to fraction form
    38,993.52/53,810.86 = 21,088.48/x
  3. Step 3: Cross multiply
    38,993.52x = 53,810.86 × 21,088.48
  4. Step 4: Simplify right side
    38,993.52x = 1,134,789,244.89
  5. Step 5: Solve for x
    x = 1,134,789,244.89/38,993.52
  6. Step 6: Final answer
    x = 29,102.00

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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.