Home / 38,977.12-53,789.98-21,750.99

Finding the Fourth Proportional to 38,977.12, 53,789.98 and 21,750.99

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Solution

The fourth proportional to 38,977.12, 53,789.98 and 21,750.99 is: 30,017.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,977.12 : 53,789.98 = 21,750.99 : x
  2. Step 2: Convert to fraction form
    38,977.12/53,789.98 = 21,750.99/x
  3. Step 3: Cross multiply
    38,977.12x = 53,789.98 × 21,750.99
  4. Step 4: Simplify right side
    38,977.12x = 1,169,985,048.13
  5. Step 5: Solve for x
    x = 1,169,985,048.13/38,977.12
  6. Step 6: Final answer
    x = 30,017.23

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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.