Home / 21,319.00-31,985.16-7,279.36

Finding the Fourth Proportional to 21,319.00, 31,985.16 and 7,279.36

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Solution

The fourth proportional to 21,319.00, 31,985.16 and 7,279.36 is: 10,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.00 : 31,985.16 = 7,279.36 : x
  2. Step 2: Convert to fraction form
    21,319.00/31,985.16 = 7,279.36/x
  3. Step 3: Cross multiply
    21,319.00x = 31,985.16 × 7,279.36
  4. Step 4: Simplify right side
    21,319.00x = 232,831,297.98
  5. Step 5: Solve for x
    x = 232,831,297.98/21,319.00
  6. Step 6: Final answer
    x = 10,921.31

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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.