Home / 13,303.72-19,955.62-12,491.79

Finding the Fourth Proportional to 13,303.72, 19,955.62 and 12,491.79

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Solution

The fourth proportional to 13,303.72, 19,955.62 and 12,491.79 is: 18,737.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.72 : 19,955.62 = 12,491.79 : x
  2. Step 2: Convert to fraction form
    13,303.72/19,955.62 = 12,491.79/x
  3. Step 3: Cross multiply
    13,303.72x = 19,955.62 × 12,491.79
  4. Step 4: Simplify right side
    13,303.72x = 249,281,453.25
  5. Step 5: Solve for x
    x = 249,281,453.25/13,303.72
  6. Step 6: Final answer
    x = 18,737.73

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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.