Home / 13,987.05-19,302.48-7,613.99

Finding the Fourth Proportional to 13,987.05, 19,302.48 and 7,613.99

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Solution

The fourth proportional to 13,987.05, 19,302.48 and 7,613.99 is: 10,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.05 : 19,302.48 = 7,613.99 : x
  2. Step 2: Convert to fraction form
    13,987.05/19,302.48 = 7,613.99/x
  3. Step 3: Cross multiply
    13,987.05x = 19,302.48 × 7,613.99
  4. Step 4: Simplify right side
    13,987.05x = 146,968,793.18
  5. Step 5: Solve for x
    x = 146,968,793.18/13,987.05
  6. Step 6: Final answer
    x = 10,507.49

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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.