Home / 13,421.11-20,127.51-4,653.99

Finding the Fourth Proportional to 13,421.11, 20,127.51 and 4,653.99

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Solution

The fourth proportional to 13,421.11, 20,127.51 and 4,653.99 is: 6,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.11 : 20,127.51 = 4,653.99 : x
  2. Step 2: Convert to fraction form
    13,421.11/20,127.51 = 4,653.99/x
  3. Step 3: Cross multiply
    13,421.11x = 20,127.51 × 4,653.99
  4. Step 4: Simplify right side
    13,421.11x = 93,673,129.63
  5. Step 5: Solve for x
    x = 93,673,129.63/13,421.11
  6. Step 6: Final answer
    x = 6,979.54

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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.