Home / 30,750.85-42,430.54-17,319.23

Finding the Fourth Proportional to 30,750.85, 42,430.54 and 17,319.23

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Solution

The fourth proportional to 30,750.85, 42,430.54 and 17,319.23 is: 23,897.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.85 : 42,430.54 = 17,319.23 : x
  2. Step 2: Convert to fraction form
    30,750.85/42,430.54 = 17,319.23/x
  3. Step 3: Cross multiply
    30,750.85x = 42,430.54 × 17,319.23
  4. Step 4: Simplify right side
    30,750.85x = 734,864,194.69
  5. Step 5: Solve for x
    x = 734,864,194.69/30,750.85
  6. Step 6: Final answer
    x = 23,897.36

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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.