Home / 19,415.08-29,073.21-12,831.40

Finding the Fourth Proportional to 19,415.08, 29,073.21 and 12,831.40

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Solution

The fourth proportional to 19,415.08, 29,073.21 and 12,831.40 is: 19,214.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.08 : 29,073.21 = 12,831.40 : x
  2. Step 2: Convert to fraction form
    19,415.08/29,073.21 = 12,831.40/x
  3. Step 3: Cross multiply
    19,415.08x = 29,073.21 × 12,831.40
  4. Step 4: Simplify right side
    19,415.08x = 373,049,986.79
  5. Step 5: Solve for x
    x = 373,049,986.79/19,415.08
  6. Step 6: Final answer
    x = 19,214.44

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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.