Home / 28,623.78-39,482.64-20,677.68

Finding the Fourth Proportional to 28,623.78, 39,482.64 and 20,677.68

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Solution

The fourth proportional to 28,623.78, 39,482.64 and 20,677.68 is: 28,522.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,623.78 : 39,482.64 = 20,677.68 : x
  2. Step 2: Convert to fraction form
    28,623.78/39,482.64 = 20,677.68/x
  3. Step 3: Cross multiply
    28,623.78x = 39,482.64 × 20,677.68
  4. Step 4: Simplify right side
    28,623.78x = 816,409,395.48
  5. Step 5: Solve for x
    x = 816,409,395.48/28,623.78
  6. Step 6: Final answer
    x = 28,522.07

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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.