Home / 38,935.80-53,730.29-21,939.74

Finding the Fourth Proportional to 38,935.80, 53,730.29 and 21,939.74

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Solution

The fourth proportional to 38,935.80, 53,730.29 and 21,939.74 is: 30,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,935.80 : 53,730.29 = 21,939.74 : x
  2. Step 2: Convert to fraction form
    38,935.80/53,730.29 = 21,939.74/x
  3. Step 3: Cross multiply
    38,935.80x = 53,730.29 × 21,939.74
  4. Step 4: Simplify right side
    38,935.80x = 1,178,828,214.37
  5. Step 5: Solve for x
    x = 1,178,828,214.37/38,935.80
  6. Step 6: Final answer
    x = 30,276.20

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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.