Home / 19,389.90-29,052.45-12,812.70

Finding the Fourth Proportional to 19,389.90, 29,052.45 and 12,812.70

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Solution

The fourth proportional to 19,389.90, 29,052.45 and 12,812.70 is: 19,197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.90 : 29,052.45 = 12,812.70 : x
  2. Step 2: Convert to fraction form
    19,389.90/29,052.45 = 12,812.70/x
  3. Step 3: Cross multiply
    19,389.90x = 29,052.45 × 12,812.70
  4. Step 4: Simplify right side
    19,389.90x = 372,240,326.12
  5. Step 5: Solve for x
    x = 372,240,326.12/19,389.90
  6. Step 6: Final answer
    x = 19,197.64

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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.