Home / 19,887.66-27,444.45-10,812.72

Finding the Fourth Proportional to 19,887.66, 27,444.45 and 10,812.72

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Solution

The fourth proportional to 19,887.66, 27,444.45 and 10,812.72 is: 14,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.66 : 27,444.45 = 10,812.72 : x
  2. Step 2: Convert to fraction form
    19,887.66/27,444.45 = 10,812.72/x
  3. Step 3: Cross multiply
    19,887.66x = 27,444.45 × 10,812.72
  4. Step 4: Simplify right side
    19,887.66x = 296,749,153.40
  5. Step 5: Solve for x
    x = 296,749,153.40/19,887.66
  6. Step 6: Final answer
    x = 14,921.27

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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.