Home / 28,812.81-39,765.58-16,880.91

Finding the Fourth Proportional to 28,812.81, 39,765.58 and 16,880.91

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Solution

The fourth proportional to 28,812.81, 39,765.58 and 16,880.91 is: 23,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.81 : 39,765.58 = 16,880.91 : x
  2. Step 2: Convert to fraction form
    28,812.81/39,765.58 = 16,880.91/x
  3. Step 3: Cross multiply
    28,812.81x = 39,765.58 × 16,880.91
  4. Step 4: Simplify right side
    28,812.81x = 671,279,080.71
  5. Step 5: Solve for x
    x = 671,279,080.71/28,812.81
  6. Step 6: Final answer
    x = 23,297.94

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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.