Home / 30,745.07-42,420.90-17,313.65

Finding the Fourth Proportional to 30,745.07, 42,420.90 and 17,313.65

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Solution

The fourth proportional to 30,745.07, 42,420.90 and 17,313.65 is: 23,888.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,745.07 : 42,420.90 = 17,313.65 : x
  2. Step 2: Convert to fraction form
    30,745.07/42,420.90 = 17,313.65/x
  3. Step 3: Cross multiply
    30,745.07x = 42,420.90 × 17,313.65
  4. Step 4: Simplify right side
    30,745.07x = 734,460,316.61
  5. Step 5: Solve for x
    x = 734,460,316.61/30,745.07
  6. Step 6: Final answer
    x = 23,888.72

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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.