Home / 13,011.45-19,503.20-5,619.39

Finding the Fourth Proportional to 13,011.45, 19,503.20 and 5,619.39

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Solution

The fourth proportional to 13,011.45, 19,503.20 and 5,619.39 is: 8,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.45 : 19,503.20 = 5,619.39 : x
  2. Step 2: Convert to fraction form
    13,011.45/19,503.20 = 5,619.39/x
  3. Step 3: Cross multiply
    13,011.45x = 19,503.20 × 5,619.39
  4. Step 4: Simplify right side
    13,011.45x = 109,596,058.95
  5. Step 5: Solve for x
    x = 109,596,058.95/13,011.45
  6. Step 6: Final answer
    x = 8,423.05

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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.