Home / 30,443.63-42,011.96-17,015.45

Finding the Fourth Proportional to 30,443.63, 42,011.96 and 17,015.45

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Solution

The fourth proportional to 30,443.63, 42,011.96 and 17,015.45 is: 23,481.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.63 : 42,011.96 = 17,015.45 : x
  2. Step 2: Convert to fraction form
    30,443.63/42,011.96 = 17,015.45/x
  3. Step 3: Cross multiply
    30,443.63x = 42,011.96 × 17,015.45
  4. Step 4: Simplify right side
    30,443.63x = 714,852,109.64
  5. Step 5: Solve for x
    x = 714,852,109.64/30,443.63
  6. Step 6: Final answer
    x = 23,481.18

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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.