Home / 12,421.63-18,632.75-4,102.36

Finding the Fourth Proportional to 12,421.63, 18,632.75 and 4,102.36

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Solution

The fourth proportional to 12,421.63, 18,632.75 and 4,102.36 is: 6,153.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.63 : 18,632.75 = 4,102.36 : x
  2. Step 2: Convert to fraction form
    12,421.63/18,632.75 = 4,102.36/x
  3. Step 3: Cross multiply
    12,421.63x = 18,632.75 × 4,102.36
  4. Step 4: Simplify right side
    12,421.63x = 76,438,248.29
  5. Step 5: Solve for x
    x = 76,438,248.29/12,421.63
  6. Step 6: Final answer
    x = 6,153.64

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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.