Home / 13,705.23-20,561.49-4,345.50

Finding the Fourth Proportional to 13,705.23, 20,561.49 and 4,345.50

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Solution

The fourth proportional to 13,705.23, 20,561.49 and 4,345.50 is: 6,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.23 : 20,561.49 = 4,345.50 : x
  2. Step 2: Convert to fraction form
    13,705.23/20,561.49 = 4,345.50/x
  3. Step 3: Cross multiply
    13,705.23x = 20,561.49 × 4,345.50
  4. Step 4: Simplify right side
    13,705.23x = 89,349,954.80
  5. Step 5: Solve for x
    x = 89,349,954.80/13,705.23
  6. Step 6: Final answer
    x = 6,519.41

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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.