Home / 21,430.36-32,194.95-20,544.63

Finding the Fourth Proportional to 21,430.36, 32,194.95 and 20,544.63

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Solution

The fourth proportional to 21,430.36, 32,194.95 and 20,544.63 is: 30,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.36 : 32,194.95 = 20,544.63 : x
  2. Step 2: Convert to fraction form
    21,430.36/32,194.95 = 20,544.63/x
  3. Step 3: Cross multiply
    21,430.36x = 32,194.95 × 20,544.63
  4. Step 4: Simplify right side
    21,430.36x = 661,433,335.62
  5. Step 5: Solve for x
    x = 661,433,335.62/21,430.36
  6. Step 6: Final answer
    x = 30,864.31

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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.