Home / 19,515.80-29,290.14-8,430.89

Finding the Fourth Proportional to 19,515.80, 29,290.14 and 8,430.89

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Solution

The fourth proportional to 19,515.80, 29,290.14 and 8,430.89 is: 12,653.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.80 : 29,290.14 = 8,430.89 : x
  2. Step 2: Convert to fraction form
    19,515.80/29,290.14 = 8,430.89/x
  3. Step 3: Cross multiply
    19,515.80x = 29,290.14 × 8,430.89
  4. Step 4: Simplify right side
    19,515.80x = 246,941,801.97
  5. Step 5: Solve for x
    x = 246,941,801.97/19,515.80
  6. Step 6: Final answer
    x = 12,653.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.