Home / 30,817.90-42,528.68-16,670.74

Finding the Fourth Proportional to 30,817.90, 42,528.68 and 16,670.74

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Solution

The fourth proportional to 30,817.90, 42,528.68 and 16,670.74 is: 23,005.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,817.90 : 42,528.68 = 16,670.74 : x
  2. Step 2: Convert to fraction form
    30,817.90/42,528.68 = 16,670.74/x
  3. Step 3: Cross multiply
    30,817.90x = 42,528.68 × 16,670.74
  4. Step 4: Simplify right side
    30,817.90x = 708,984,483.47
  5. Step 5: Solve for x
    x = 708,984,483.47/30,817.90
  6. Step 6: Final answer
    x = 23,005.61

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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.