Home / 30,447.27-42,017.04-17,018.48

Finding the Fourth Proportional to 30,447.27, 42,017.04 and 17,018.48

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Solution

The fourth proportional to 30,447.27, 42,017.04 and 17,018.48 is: 23,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.27 : 42,017.04 = 17,018.48 : x
  2. Step 2: Convert to fraction form
    30,447.27/42,017.04 = 17,018.48/x
  3. Step 3: Cross multiply
    30,447.27x = 42,017.04 × 17,018.48
  4. Step 4: Simplify right side
    30,447.27x = 715,066,259.94
  5. Step 5: Solve for x
    x = 715,066,259.94/30,447.27
  6. Step 6: Final answer
    x = 23,485.40

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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.