Home / 20,983.02-28,953.99-12,485.34

Finding the Fourth Proportional to 20,983.02, 28,953.99 and 12,485.34

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Solution

The fourth proportional to 20,983.02, 28,953.99 and 12,485.34 is: 17,228.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.02 : 28,953.99 = 12,485.34 : x
  2. Step 2: Convert to fraction form
    20,983.02/28,953.99 = 12,485.34/x
  3. Step 3: Cross multiply
    20,983.02x = 28,953.99 × 12,485.34
  4. Step 4: Simplify right side
    20,983.02x = 361,500,409.51
  5. Step 5: Solve for x
    x = 361,500,409.51/20,983.02
  6. Step 6: Final answer
    x = 17,228.24

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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.