Home / 30,909.36-42,654.96-16,762.20

Finding the Fourth Proportional to 30,909.36, 42,654.96 and 16,762.20

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Solution

The fourth proportional to 30,909.36, 42,654.96 and 16,762.20 is: 23,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.36 : 42,654.96 = 16,762.20 : x
  2. Step 2: Convert to fraction form
    30,909.36/42,654.96 = 16,762.20/x
  3. Step 3: Cross multiply
    30,909.36x = 42,654.96 × 16,762.20
  4. Step 4: Simplify right side
    30,909.36x = 714,990,970.51
  5. Step 5: Solve for x
    x = 714,990,970.51/30,909.36
  6. Step 6: Final answer
    x = 23,131.86

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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.