Home / 12,875.78-19,315.20-4,554.08

Finding the Fourth Proportional to 12,875.78, 19,315.20 and 4,554.08

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Solution

The fourth proportional to 12,875.78, 19,315.20 and 4,554.08 is: 6,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.78 : 19,315.20 = 4,554.08 : x
  2. Step 2: Convert to fraction form
    12,875.78/19,315.20 = 4,554.08/x
  3. Step 3: Cross multiply
    12,875.78x = 19,315.20 × 4,554.08
  4. Step 4: Simplify right side
    12,875.78x = 87,962,966.02
  5. Step 5: Solve for x
    x = 87,962,966.02/12,875.78
  6. Step 6: Final answer
    x = 6,831.66

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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.