Home / 38,911.40-53,697.16-21,915.67

Finding the Fourth Proportional to 38,911.40, 53,697.16 and 21,915.67

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Solution

The fourth proportional to 38,911.40, 53,697.16 and 21,915.67 is: 30,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,911.40 : 53,697.16 = 21,915.67 : x
  2. Step 2: Convert to fraction form
    38,911.40/53,697.16 = 21,915.67/x
  3. Step 3: Cross multiply
    38,911.40x = 53,697.16 × 21,915.67
  4. Step 4: Simplify right side
    38,911.40x = 1,176,809,238.50
  5. Step 5: Solve for x
    x = 1,176,809,238.50/38,911.40
  6. Step 6: Final answer
    x = 30,243.30

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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.