Home / 12,613.51-18,895.60-7,670.89

Finding the Fourth Proportional to 12,613.51, 18,895.60 and 7,670.89

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Solution

The fourth proportional to 12,613.51, 18,895.60 and 7,670.89 is: 11,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.51 : 18,895.60 = 7,670.89 : x
  2. Step 2: Convert to fraction form
    12,613.51/18,895.60 = 7,670.89/x
  3. Step 3: Cross multiply
    12,613.51x = 18,895.60 × 7,670.89
  4. Step 4: Simplify right side
    12,613.51x = 144,946,069.08
  5. Step 5: Solve for x
    x = 144,946,069.08/12,613.51
  6. Step 6: Final answer
    x = 11,491.34

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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.