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Finding the Fourth Proportional to 21,237.58, 31,857.09 and 5,655.22

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Solution

The fourth proportional to 21,237.58, 31,857.09 and 5,655.22 is: 8,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.58 : 31,857.09 = 5,655.22 : x
  2. Step 2: Convert to fraction form
    21,237.58/31,857.09 = 5,655.22/x
  3. Step 3: Cross multiply
    21,237.58x = 31,857.09 × 5,655.22
  4. Step 4: Simplify right side
    21,237.58x = 180,158,852.51
  5. Step 5: Solve for x
    x = 180,158,852.51/21,237.58
  6. Step 6: Final answer
    x = 8,483.02

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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.