Home / 30,918.02-42,667.10-16,770.86

Finding the Fourth Proportional to 30,918.02, 42,667.10 and 16,770.86

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Solution

The fourth proportional to 30,918.02, 42,667.10 and 16,770.86 is: 23,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.02 : 42,667.10 = 16,770.86 : x
  2. Step 2: Convert to fraction form
    30,918.02/42,667.10 = 16,770.86/x
  3. Step 3: Cross multiply
    30,918.02x = 42,667.10 × 16,770.86
  4. Step 4: Simplify right side
    30,918.02x = 715,563,960.71
  5. Step 5: Solve for x
    x = 715,563,960.71/30,918.02
  6. Step 6: Final answer
    x = 23,143.91

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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.