Home / 19,259.27-28,864.30-12,690.07

Finding the Fourth Proportional to 19,259.27, 28,864.30 and 12,690.07

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Solution

The fourth proportional to 19,259.27, 28,864.30 and 12,690.07 is: 19,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,259.27 : 28,864.30 = 12,690.07 : x
  2. Step 2: Convert to fraction form
    19,259.27/28,864.30 = 12,690.07/x
  3. Step 3: Cross multiply
    19,259.27x = 28,864.30 × 12,690.07
  4. Step 4: Simplify right side
    19,259.27x = 366,289,907.41
  5. Step 5: Solve for x
    x = 366,289,907.41/19,259.27
  6. Step 6: Final answer
    x = 19,018.89

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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.