Home / 30,830.50-42,546.09-16,683.45

Finding the Fourth Proportional to 30,830.50, 42,546.09 and 16,683.45

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Solution

The fourth proportional to 30,830.50, 42,546.09 and 16,683.45 is: 23,023.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.50 : 42,546.09 = 16,683.45 : x
  2. Step 2: Convert to fraction form
    30,830.50/42,546.09 = 16,683.45/x
  3. Step 3: Cross multiply
    30,830.50x = 42,546.09 × 16,683.45
  4. Step 4: Simplify right side
    30,830.50x = 709,815,565.21
  5. Step 5: Solve for x
    x = 709,815,565.21/30,830.50
  6. Step 6: Final answer
    x = 23,023.16

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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.