Home / 30,646.36-42,289.68-17,215.02

Finding the Fourth Proportional to 30,646.36, 42,289.68 and 17,215.02

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Solution

The fourth proportional to 30,646.36, 42,289.68 and 17,215.02 is: 23,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.36 : 42,289.68 = 17,215.02 : x
  2. Step 2: Convert to fraction form
    30,646.36/42,289.68 = 17,215.02/x
  3. Step 3: Cross multiply
    30,646.36x = 42,289.68 × 17,215.02
  4. Step 4: Simplify right side
    30,646.36x = 728,017,686.99
  5. Step 5: Solve for x
    x = 728,017,686.99/30,646.36
  6. Step 6: Final answer
    x = 23,755.44

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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.