Home / 38,396.63-52,986.55-21,400.81

Finding the Fourth Proportional to 38,396.63, 52,986.55 and 21,400.81

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Solution

The fourth proportional to 38,396.63, 52,986.55 and 21,400.81 is: 29,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,396.63 : 52,986.55 = 21,400.81 : x
  2. Step 2: Convert to fraction form
    38,396.63/52,986.55 = 21,400.81/x
  3. Step 3: Cross multiply
    38,396.63x = 52,986.55 × 21,400.81
  4. Step 4: Simplify right side
    38,396.63x = 1,133,955,089.11
  5. Step 5: Solve for x
    x = 1,133,955,089.11/38,396.63
  6. Step 6: Final answer
    x = 29,532.67

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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.