Home / 30,783.12-42,480.90-16,635.93

Finding the Fourth Proportional to 30,783.12, 42,480.90 and 16,635.93

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Solution

The fourth proportional to 30,783.12, 42,480.90 and 16,635.93 is: 22,957.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783.12 : 42,480.90 = 16,635.93 : x
  2. Step 2: Convert to fraction form
    30,783.12/42,480.90 = 16,635.93/x
  3. Step 3: Cross multiply
    30,783.12x = 42,480.90 × 16,635.93
  4. Step 4: Simplify right side
    30,783.12x = 706,709,278.74
  5. Step 5: Solve for x
    x = 706,709,278.74/30,783.12
  6. Step 6: Final answer
    x = 22,957.69

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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.