Home / 30,886.89-42,623.90-16,739.74

Finding the Fourth Proportional to 30,886.89, 42,623.90 and 16,739.74

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Solution

The fourth proportional to 30,886.89, 42,623.90 and 16,739.74 is: 23,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,886.89 : 42,623.90 = 16,739.74 : x
  2. Step 2: Convert to fraction form
    30,886.89/42,623.90 = 16,739.74/x
  3. Step 3: Cross multiply
    30,886.89x = 42,623.90 × 16,739.74
  4. Step 4: Simplify right side
    30,886.89x = 713,513,003.79
  5. Step 5: Solve for x
    x = 713,513,003.79/30,886.89
  6. Step 6: Final answer
    x = 23,100.84

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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.