Home / 53,137.75-79,711.28-13,694.80

Finding the Fourth Proportional to 53,137.75, 79,711.28 and 13,694.80

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Solution

The fourth proportional to 53,137.75, 79,711.28 and 13,694.80 is: 20,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,137.75 : 79,711.28 = 13,694.80 : x
  2. Step 2: Convert to fraction form
    53,137.75/79,711.28 = 13,694.80/x
  3. Step 3: Cross multiply
    53,137.75x = 79,711.28 × 13,694.80
  4. Step 4: Simplify right side
    53,137.75x = 1,091,630,037.34
  5. Step 5: Solve for x
    x = 1,091,630,037.34/53,137.75
  6. Step 6: Final answer
    x = 20,543.40

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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.