Home / 27,755.64-38,303.75-15,817.05

Finding the Fourth Proportional to 27,755.64, 38,303.75 and 15,817.05

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Solution

The fourth proportional to 27,755.64, 38,303.75 and 15,817.05 is: 21,828.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,755.64 : 38,303.75 = 15,817.05 : x
  2. Step 2: Convert to fraction form
    27,755.64/38,303.75 = 15,817.05/x
  3. Step 3: Cross multiply
    27,755.64x = 38,303.75 × 15,817.05
  4. Step 4: Simplify right side
    27,755.64x = 605,852,328.94
  5. Step 5: Solve for x
    x = 605,852,328.94/27,755.64
  6. Step 6: Final answer
    x = 21,828.08

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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.