Home / 30,154.78-41,632.47-19,418.33

Finding the Fourth Proportional to 30,154.78, 41,632.47 and 19,418.33

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Solution

The fourth proportional to 30,154.78, 41,632.47 and 19,418.33 is: 26,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.78 : 41,632.47 = 19,418.33 : x
  2. Step 2: Convert to fraction form
    30,154.78/41,632.47 = 19,418.33/x
  3. Step 3: Cross multiply
    30,154.78x = 41,632.47 × 19,418.33
  4. Step 4: Simplify right side
    30,154.78x = 808,433,041.18
  5. Step 5: Solve for x
    x = 808,433,041.18/30,154.78
  6. Step 6: Final answer
    x = 26,809.45

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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.