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Finding the Fourth Proportional to 35,516.40, 49,001.40 and 20,612.40

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Solution

The fourth proportional to 35,516.40, 49,001.40 and 20,612.40 is: 28,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,516.40 : 49,001.40 = 20,612.40 : x
  2. Step 2: Convert to fraction form
    35,516.40/49,001.40 = 20,612.40/x
  3. Step 3: Cross multiply
    35,516.40x = 49,001.40 × 20,612.40
  4. Step 4: Simplify right side
    35,516.40x = 1,010,036,457.36
  5. Step 5: Solve for x
    x = 1,010,036,457.36/35,516.40
  6. Step 6: Final answer
    x = 28,438.59

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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.