Home / 21,928.51-30,260.53-12,495.25

Finding the Fourth Proportional to 21,928.51, 30,260.53 and 12,495.25

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Solution

The fourth proportional to 21,928.51, 30,260.53 and 12,495.25 is: 17,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.51 : 30,260.53 = 12,495.25 : x
  2. Step 2: Convert to fraction form
    21,928.51/30,260.53 = 12,495.25/x
  3. Step 3: Cross multiply
    21,928.51x = 30,260.53 × 12,495.25
  4. Step 4: Simplify right side
    21,928.51x = 378,112,887.48
  5. Step 5: Solve for x
    x = 378,112,887.48/21,928.51
  6. Step 6: Final answer
    x = 17,242.98

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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.