Home / 14,189.88-19,581.27-7,815.23

Finding the Fourth Proportional to 14,189.88, 19,581.27 and 7,815.23

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Solution

The fourth proportional to 14,189.88, 19,581.27 and 7,815.23 is: 10,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.88 : 19,581.27 = 7,815.23 : x
  2. Step 2: Convert to fraction form
    14,189.88/19,581.27 = 7,815.23/x
  3. Step 3: Cross multiply
    14,189.88x = 19,581.27 × 7,815.23
  4. Step 4: Simplify right side
    14,189.88x = 153,032,128.74
  5. Step 5: Solve for x
    x = 153,032,128.74/14,189.88
  6. Step 6: Final answer
    x = 10,784.60

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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.