Home / 15,618.80-21,554.45-8,545.22

Finding the Fourth Proportional to 15,618.80, 21,554.45 and 8,545.22

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Solution

The fourth proportional to 15,618.80, 21,554.45 and 8,545.22 is: 11,792.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.80 : 21,554.45 = 8,545.22 : x
  2. Step 2: Convert to fraction form
    15,618.80/21,554.45 = 8,545.22/x
  3. Step 3: Cross multiply
    15,618.80x = 21,554.45 × 8,545.22
  4. Step 4: Simplify right side
    15,618.80x = 184,187,430.82
  5. Step 5: Solve for x
    x = 184,187,430.82/15,618.80
  6. Step 6: Final answer
    x = 11,792.67

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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.