Home / 13,613.63-18,728.48-13,030.43

Finding the Fourth Proportional to 13,613.63, 18,728.48 and 13,030.43

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Solution

The fourth proportional to 13,613.63, 18,728.48 and 13,030.43 is: 17,926.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.63 : 18,728.48 = 13,030.43 : x
  2. Step 2: Convert to fraction form
    13,613.63/18,728.48 = 13,030.43/x
  3. Step 3: Cross multiply
    13,613.63x = 18,728.48 × 13,030.43
  4. Step 4: Simplify right side
    13,613.63x = 244,039,988.85
  5. Step 5: Solve for x
    x = 244,039,988.85/13,613.63
  6. Step 6: Final answer
    x = 17,926.16

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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.