Home / 30,818.06-42,528.79-16,670.87

Finding the Fourth Proportional to 30,818.06, 42,528.79 and 16,670.87

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Solution

The fourth proportional to 30,818.06, 42,528.79 and 16,670.87 is: 23,005.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,818.06 : 42,528.79 = 16,670.87 : x
  2. Step 2: Convert to fraction form
    30,818.06/42,528.79 = 16,670.87/x
  3. Step 3: Cross multiply
    30,818.06x = 42,528.79 × 16,670.87
  4. Step 4: Simplify right side
    30,818.06x = 708,991,929.35
  5. Step 5: Solve for x
    x = 708,991,929.35/30,818.06
  6. Step 6: Final answer
    x = 23,005.73

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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.