Home / 30,745.79-42,433.21-17,319.63

Finding the Fourth Proportional to 30,745.79, 42,433.21 and 17,319.63

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Solution

The fourth proportional to 30,745.79, 42,433.21 and 17,319.63 is: 23,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,745.79 : 42,433.21 = 17,319.63 : x
  2. Step 2: Convert to fraction form
    30,745.79/42,433.21 = 17,319.63/x
  3. Step 3: Cross multiply
    30,745.79x = 42,433.21 × 17,319.63
  4. Step 4: Simplify right side
    30,745.79x = 734,927,496.91
  5. Step 5: Solve for x
    x = 734,927,496.91/30,745.79
  6. Step 6: Final answer
    x = 23,903.35

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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.