Home / 20,586.06-28,398.29-13,019.67

Finding the Fourth Proportional to 20,586.06, 28,398.29 and 13,019.67

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Solution

The fourth proportional to 20,586.06, 28,398.29 and 13,019.67 is: 17,960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.06 : 28,398.29 = 13,019.67 : x
  2. Step 2: Convert to fraction form
    20,586.06/28,398.29 = 13,019.67/x
  3. Step 3: Cross multiply
    20,586.06x = 28,398.29 × 13,019.67
  4. Step 4: Simplify right side
    20,586.06x = 369,736,299.27
  5. Step 5: Solve for x
    x = 369,736,299.27/20,586.06
  6. Step 6: Final answer
    x = 17,960.52

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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.