Home / 30,878.42-42,612.35-16,731.36

Finding the Fourth Proportional to 30,878.42, 42,612.35 and 16,731.36

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Solution

The fourth proportional to 30,878.42, 42,612.35 and 16,731.36 is: 23,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.42 : 42,612.35 = 16,731.36 : x
  2. Step 2: Convert to fraction form
    30,878.42/42,612.35 = 16,731.36/x
  3. Step 3: Cross multiply
    30,878.42x = 42,612.35 × 16,731.36
  4. Step 4: Simplify right side
    30,878.42x = 712,962,484.64
  5. Step 5: Solve for x
    x = 712,962,484.64/30,878.42
  6. Step 6: Final answer
    x = 23,089.35

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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.