Home / 39,509.28-54,522.86-21,604.36

Finding the Fourth Proportional to 39,509.28, 54,522.86 and 21,604.36

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Solution

The fourth proportional to 39,509.28, 54,522.86 and 21,604.36 is: 29,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,509.28 : 54,522.86 = 21,604.36 : x
  2. Step 2: Convert to fraction form
    39,509.28/54,522.86 = 21,604.36/x
  3. Step 3: Cross multiply
    39,509.28x = 54,522.86 × 21,604.36
  4. Step 4: Simplify right side
    39,509.28x = 1,177,931,495.67
  5. Step 5: Solve for x
    x = 1,177,931,495.67/39,509.28
  6. Step 6: Final answer
    x = 29,814.05

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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.