Home / 15,619.50-21,554.64-8,545.68

Finding the Fourth Proportional to 15,619.50, 21,554.64 and 8,545.68

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Solution

The fourth proportional to 15,619.50, 21,554.64 and 8,545.68 is: 11,792.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.50 : 21,554.64 = 8,545.68 : x
  2. Step 2: Convert to fraction form
    15,619.50/21,554.64 = 8,545.68/x
  3. Step 3: Cross multiply
    15,619.50x = 21,554.64 × 8,545.68
  4. Step 4: Simplify right side
    15,619.50x = 184,199,055.96
  5. Step 5: Solve for x
    x = 184,199,055.96/15,619.50
  6. Step 6: Final answer
    x = 11,792.89

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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.