Home / 20,862.48-28,790.52-12,477.36

Finding the Fourth Proportional to 20,862.48, 28,790.52 and 12,477.36

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Solution

The fourth proportional to 20,862.48, 28,790.52 and 12,477.36 is: 17,218.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.48 : 28,790.52 = 12,477.36 : x
  2. Step 2: Convert to fraction form
    20,862.48/28,790.52 = 12,477.36/x
  3. Step 3: Cross multiply
    20,862.48x = 28,790.52 × 12,477.36
  4. Step 4: Simplify right side
    20,862.48x = 359,229,682.63
  5. Step 5: Solve for x
    x = 359,229,682.63/20,862.48
  6. Step 6: Final answer
    x = 17,218.93

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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.