Home / 13,808.34-19,055.54-7,520.71

Finding the Fourth Proportional to 13,808.34, 19,055.54 and 7,520.71

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Solution

The fourth proportional to 13,808.34, 19,055.54 and 7,520.71 is: 10,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.34 : 19,055.54 = 7,520.71 : x
  2. Step 2: Convert to fraction form
    13,808.34/19,055.54 = 7,520.71/x
  3. Step 3: Cross multiply
    13,808.34x = 19,055.54 × 7,520.71
  4. Step 4: Simplify right side
    13,808.34x = 143,311,190.23
  5. Step 5: Solve for x
    x = 143,311,190.23/13,808.34
  6. Step 6: Final answer
    x = 10,378.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.