Home / 17,880.09-24,642.81-15,817.91

Finding the Fourth Proportional to 17,880.09, 24,642.81 and 15,817.91

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Solution

The fourth proportional to 17,880.09, 24,642.81 and 15,817.91 is: 21,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,880.09 : 24,642.81 = 15,817.91 : x
  2. Step 2: Convert to fraction form
    17,880.09/24,642.81 = 15,817.91/x
  3. Step 3: Cross multiply
    17,880.09x = 24,642.81 × 15,817.91
  4. Step 4: Simplify right side
    17,880.09x = 389,797,627.51
  5. Step 5: Solve for x
    x = 389,797,627.51/17,880.09
  6. Step 6: Final answer
    x = 21,800.65

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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.