Home / 28,965.60-39,981.40-16,869.67

Finding the Fourth Proportional to 28,965.60, 39,981.40 and 16,869.67

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Solution

The fourth proportional to 28,965.60, 39,981.40 and 16,869.67 is: 23,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.60 : 39,981.40 = 16,869.67 : x
  2. Step 2: Convert to fraction form
    28,965.60/39,981.40 = 16,869.67/x
  3. Step 3: Cross multiply
    28,965.60x = 39,981.40 × 16,869.67
  4. Step 4: Simplify right side
    28,965.60x = 674,472,882.01
  5. Step 5: Solve for x
    x = 674,472,882.01/28,965.60
  6. Step 6: Final answer
    x = 23,285.31

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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.