Home / 53,081.48-79,622.28-13,638.92

Finding the Fourth Proportional to 53,081.48, 79,622.28 and 13,638.92

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Solution

The fourth proportional to 53,081.48, 79,622.28 and 13,638.92 is: 20,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,081.48 : 79,622.28 = 13,638.92 : x
  2. Step 2: Convert to fraction form
    53,081.48/79,622.28 = 13,638.92/x
  3. Step 3: Cross multiply
    53,081.48x = 79,622.28 × 13,638.92
  4. Step 4: Simplify right side
    53,081.48x = 1,085,961,907.14
  5. Step 5: Solve for x
    x = 1,085,961,907.14/53,081.48
  6. Step 6: Final answer
    x = 20,458.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.