Home / 30,871.86-42,603.10-16,724.74

Finding the Fourth Proportional to 30,871.86, 42,603.10 and 16,724.74

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Solution

The fourth proportional to 30,871.86, 42,603.10 and 16,724.74 is: 23,080.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.86 : 42,603.10 = 16,724.74 : x
  2. Step 2: Convert to fraction form
    30,871.86/42,603.10 = 16,724.74/x
  3. Step 3: Cross multiply
    30,871.86x = 42,603.10 × 16,724.74
  4. Step 4: Simplify right side
    30,871.86x = 712,525,770.69
  5. Step 5: Solve for x
    x = 712,525,770.69/30,871.86
  6. Step 6: Final answer
    x = 23,080.11

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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.