Home / 21,418,999.20-32,081,259.60-12,884,450.40

Finding the Fourth Proportional to 21,418,999.20, 32,081,259.60 and 12,884,450.40

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Solution

The fourth proportional to 21,418,999.20, 32,081,259.60 and 12,884,450.40 is: 19,298,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418,999.20 : 32,081,259.60 = 12,884,450.40 : x
  2. Step 2: Convert to fraction form
    21,418,999.20/32,081,259.60 = 12,884,450.40/x
  3. Step 3: Cross multiply
    21,418,999.20x = 32,081,259.60 × 12,884,450.40
  4. Step 4: Simplify right side
    21,418,999.20x = 413,349,398,085,723.88
  5. Step 5: Solve for x
    x = 413,349,398,085,723.88/21,418,999.20
  6. Step 6: Final answer
    x = 19,298,259.19

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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.