Home / 13,215.96-19,923.98-12,501.54

Finding the Fourth Proportional to 13,215.96, 19,923.98 and 12,501.54

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Solution

The fourth proportional to 13,215.96, 19,923.98 and 12,501.54 is: 18,846.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.96 : 19,923.98 = 12,501.54 : x
  2. Step 2: Convert to fraction form
    13,215.96/19,923.98 = 12,501.54/x
  3. Step 3: Cross multiply
    13,215.96x = 19,923.98 × 12,501.54
  4. Step 4: Simplify right side
    13,215.96x = 249,080,370.42
  5. Step 5: Solve for x
    x = 249,080,370.42/13,215.96
  6. Step 6: Final answer
    x = 18,846.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.