Home / 12,307.19-18,458.96-3,987.93

Finding the Fourth Proportional to 12,307.19, 18,458.96 and 3,987.93

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Solution

The fourth proportional to 12,307.19, 18,458.96 and 3,987.93 is: 5,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.19 : 18,458.96 = 3,987.93 : x
  2. Step 2: Convert to fraction form
    12,307.19/18,458.96 = 3,987.93/x
  3. Step 3: Cross multiply
    12,307.19x = 18,458.96 × 3,987.93
  4. Step 4: Simplify right side
    12,307.19x = 73,613,123.28
  5. Step 5: Solve for x
    x = 73,613,123.28/12,307.19
  6. Step 6: Final answer
    x = 5,981.31

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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.