Home / 35,518.42-49,012.80-20,411.11

Finding the Fourth Proportional to 35,518.42, 49,012.80 and 20,411.11

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Solution

The fourth proportional to 35,518.42, 49,012.80 and 20,411.11 is: 28,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,518.42 : 49,012.80 = 20,411.11 : x
  2. Step 2: Convert to fraction form
    35,518.42/49,012.80 = 20,411.11/x
  3. Step 3: Cross multiply
    35,518.42x = 49,012.80 × 20,411.11
  4. Step 4: Simplify right side
    35,518.42x = 1,000,405,407.14
  5. Step 5: Solve for x
    x = 1,000,405,407.14/35,518.42
  6. Step 6: Final answer
    x = 28,165.82

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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.