Home / 20,309.04-28,026.36-11,356.56

Finding the Fourth Proportional to 20,309.04, 28,026.36 and 11,356.56

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Solution

The fourth proportional to 20,309.04, 28,026.36 and 11,356.56 is: 15,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.04 : 28,026.36 = 11,356.56 : x
  2. Step 2: Convert to fraction form
    20,309.04/28,026.36 = 11,356.56/x
  3. Step 3: Cross multiply
    20,309.04x = 28,026.36 × 11,356.56
  4. Step 4: Simplify right side
    20,309.04x = 318,283,038.92
  5. Step 5: Solve for x
    x = 318,283,038.92/20,309.04
  6. Step 6: Final answer
    x = 15,671.99

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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.