Home / 21,193.02-29,242.95-12,239.10

Finding the Fourth Proportional to 21,193.02, 29,242.95 and 12,239.10

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Solution

The fourth proportional to 21,193.02, 29,242.95 and 12,239.10 is: 16,887.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.02 : 29,242.95 = 12,239.10 : x
  2. Step 2: Convert to fraction form
    21,193.02/29,242.95 = 12,239.10/x
  3. Step 3: Cross multiply
    21,193.02x = 29,242.95 × 12,239.10
  4. Step 4: Simplify right side
    21,193.02x = 357,907,389.35
  5. Step 5: Solve for x
    x = 357,907,389.35/21,193.02
  6. Step 6: Final answer
    x = 16,887.98

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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.