Home / 28,869.87-39,837.78-16,931.01

Finding the Fourth Proportional to 28,869.87, 39,837.78 and 16,931.01

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Solution

The fourth proportional to 28,869.87, 39,837.78 and 16,931.01 is: 23,363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.87 : 39,837.78 = 16,931.01 : x
  2. Step 2: Convert to fraction form
    28,869.87/39,837.78 = 16,931.01/x
  3. Step 3: Cross multiply
    28,869.87x = 39,837.78 × 16,931.01
  4. Step 4: Simplify right side
    28,869.87x = 674,493,851.56
  5. Step 5: Solve for x
    x = 674,493,851.56/28,869.87
  6. Step 6: Final answer
    x = 23,363.25

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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.