Home / 21,705.12-32,556.24-12,994.08

Finding the Fourth Proportional to 21,705.12, 32,556.24 and 12,994.08

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Solution

The fourth proportional to 21,705.12, 32,556.24 and 12,994.08 is: 19,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.12 : 32,556.24 = 12,994.08 : x
  2. Step 2: Convert to fraction form
    21,705.12/32,556.24 = 12,994.08/x
  3. Step 3: Cross multiply
    21,705.12x = 32,556.24 × 12,994.08
  4. Step 4: Simplify right side
    21,705.12x = 423,038,387.06
  5. Step 5: Solve for x
    x = 423,038,387.06/21,705.12
  6. Step 6: Final answer
    x = 19,490.26

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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.