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Finding the Fourth Proportional to 21,249, 31,847.35 and 9,390.00

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Solution

The fourth proportional to 21,249, 31,847.35 and 9,390.00 is: 14,073.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249 : 31,847.35 = 9,390.00 : x
  2. Step 2: Convert to fraction form
    21,249/31,847.35 = 9,390.00/x
  3. Step 3: Cross multiply
    21,249x = 31,847.35 × 9,390.00
  4. Step 4: Simplify right side
    21,249x = 299,046,457.26
  5. Step 5: Solve for x
    x = 299,046,457.26/21,249
  6. Step 6: Final answer
    x = 14,073.44

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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.