Home / 38,853.32-53,612.54-21,856.99

Finding the Fourth Proportional to 38,853.32, 53,612.54 and 21,856.99

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Solution

The fourth proportional to 38,853.32, 53,612.54 and 21,856.99 is: 30,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,853.32 : 53,612.54 = 21,856.99 : x
  2. Step 2: Convert to fraction form
    38,853.32/53,612.54 = 21,856.99/x
  3. Step 3: Cross multiply
    38,853.32x = 53,612.54 × 21,856.99
  4. Step 4: Simplify right side
    38,853.32x = 1,171,808,750.65
  5. Step 5: Solve for x
    x = 1,171,808,750.65/38,853.32
  6. Step 6: Final answer
    x = 30,159.81

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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.