Home / 21,219.93-29,283.51-11,788.50

Finding the Fourth Proportional to 21,219.93, 29,283.51 and 11,788.50

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Solution

The fourth proportional to 21,219.93, 29,283.51 and 11,788.50 is: 16,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.93 : 29,283.51 = 11,788.50 : x
  2. Step 2: Convert to fraction form
    21,219.93/29,283.51 = 11,788.50/x
  3. Step 3: Cross multiply
    21,219.93x = 29,283.51 × 11,788.50
  4. Step 4: Simplify right side
    21,219.93x = 345,208,657.64
  5. Step 5: Solve for x
    x = 345,208,657.64/21,219.93
  6. Step 6: Final answer
    x = 16,268.13

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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.