Home / 30,909.96-42,655.74-16,762.80

Finding the Fourth Proportional to 30,909.96, 42,655.74 and 16,762.80

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Solution

The fourth proportional to 30,909.96, 42,655.74 and 16,762.80 is: 23,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.96 : 42,655.74 = 16,762.80 : x
  2. Step 2: Convert to fraction form
    30,909.96/42,655.74 = 16,762.80/x
  3. Step 3: Cross multiply
    30,909.96x = 42,655.74 × 16,762.80
  4. Step 4: Simplify right side
    30,909.96x = 715,029,638.47
  5. Step 5: Solve for x
    x = 715,029,638.47/30,909.96
  6. Step 6: Final answer
    x = 23,132.66

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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.