Home / 21,099.40-31,630.44-17,999.32

Finding the Fourth Proportional to 21,099.40, 31,630.44 and 17,999.32

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Solution

The fourth proportional to 21,099.40, 31,630.44 and 17,999.32 is: 26,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.40 : 31,630.44 = 17,999.32 : x
  2. Step 2: Convert to fraction form
    21,099.40/31,630.44 = 17,999.32/x
  3. Step 3: Cross multiply
    21,099.40x = 31,630.44 × 17,999.32
  4. Step 4: Simplify right side
    21,099.40x = 569,326,411.30
  5. Step 5: Solve for x
    x = 569,326,411.30/21,099.40
  6. Step 6: Final answer
    x = 26,983.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.