Home / 28,653.48-39,492.90-20,158.20

Finding the Fourth Proportional to 28,653.48, 39,492.90 and 20,158.20

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Solution

The fourth proportional to 28,653.48, 39,492.90 and 20,158.20 is: 27,783.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.48 : 39,492.90 = 20,158.20 : x
  2. Step 2: Convert to fraction form
    28,653.48/39,492.90 = 20,158.20/x
  3. Step 3: Cross multiply
    28,653.48x = 39,492.90 × 20,158.20
  4. Step 4: Simplify right side
    28,653.48x = 796,105,776.78
  5. Step 5: Solve for x
    x = 796,105,776.78/28,653.48
  6. Step 6: Final answer
    x = 27,783.91

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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.