Home / 28,831.71-39,758.66-19,271.63

Finding the Fourth Proportional to 28,831.71, 39,758.66 and 19,271.63

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Solution

The fourth proportional to 28,831.71, 39,758.66 and 19,271.63 is: 26,575.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.71 : 39,758.66 = 19,271.63 : x
  2. Step 2: Convert to fraction form
    28,831.71/39,758.66 = 19,271.63/x
  3. Step 3: Cross multiply
    28,831.71x = 39,758.66 × 19,271.63
  4. Step 4: Simplify right side
    28,831.71x = 766,213,889.66
  5. Step 5: Solve for x
    x = 766,213,889.66/28,831.71
  6. Step 6: Final answer
    x = 26,575.39

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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.