Home / 27,531.57-38,009.70-19,970.64

Finding the Fourth Proportional to 27,531.57, 38,009.70 and 19,970.64

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Solution

The fourth proportional to 27,531.57, 38,009.70 and 19,970.64 is: 27,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,531.57 : 38,009.70 = 19,970.64 : x
  2. Step 2: Convert to fraction form
    27,531.57/38,009.70 = 19,970.64/x
  3. Step 3: Cross multiply
    27,531.57x = 38,009.70 × 19,970.64
  4. Step 4: Simplify right side
    27,531.57x = 759,078,035.21
  5. Step 5: Solve for x
    x = 759,078,035.21/27,531.57
  6. Step 6: Final answer
    x = 27,571.19

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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.