Home / 28,657.47-39,515.34-18,572.67

Finding the Fourth Proportional to 28,657.47, 39,515.34 and 18,572.67

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Solution

The fourth proportional to 28,657.47, 39,515.34 and 18,572.67 is: 25,609.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.47 : 39,515.34 = 18,572.67 : x
  2. Step 2: Convert to fraction form
    28,657.47/39,515.34 = 18,572.67/x
  3. Step 3: Cross multiply
    28,657.47x = 39,515.34 × 18,572.67
  4. Step 4: Simplify right side
    28,657.47x = 733,905,369.76
  5. Step 5: Solve for x
    x = 733,905,369.76/28,657.47
  6. Step 6: Final answer
    x = 25,609.57

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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.