Home / 13,106.08-18,085.98-7,137.64

Finding the Fourth Proportional to 13,106.08, 18,085.98 and 7,137.64

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Solution

The fourth proportional to 13,106.08, 18,085.98 and 7,137.64 is: 9,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.08 : 18,085.98 = 7,137.64 : x
  2. Step 2: Convert to fraction form
    13,106.08/18,085.98 = 7,137.64/x
  3. Step 3: Cross multiply
    13,106.08x = 18,085.98 × 7,137.64
  4. Step 4: Simplify right side
    13,106.08x = 129,091,214.29
  5. Step 5: Solve for x
    x = 129,091,214.29/13,106.08
  6. Step 6: Final answer
    x = 9,849.72

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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.