Home / 21,748.36-30,015.06-12,317.32

Finding the Fourth Proportional to 21,748.36, 30,015.06 and 12,317.32

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Solution

The fourth proportional to 21,748.36, 30,015.06 and 12,317.32 is: 16,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.36 : 30,015.06 = 12,317.32 : x
  2. Step 2: Convert to fraction form
    21,748.36/30,015.06 = 12,317.32/x
  3. Step 3: Cross multiply
    21,748.36x = 30,015.06 × 12,317.32
  4. Step 4: Simplify right side
    21,748.36x = 369,705,098.84
  5. Step 5: Solve for x
    x = 369,705,098.84/21,748.36
  6. Step 6: Final answer
    x = 16,999.22

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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.