Home / 21,017.87-29,004.89-11,586.77

Finding the Fourth Proportional to 21,017.87, 29,004.89 and 11,586.77

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Solution

The fourth proportional to 21,017.87, 29,004.89 and 11,586.77 is: 15,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.87 : 29,004.89 = 11,586.77 : x
  2. Step 2: Convert to fraction form
    21,017.87/29,004.89 = 11,586.77/x
  3. Step 3: Cross multiply
    21,017.87x = 29,004.89 × 11,586.77
  4. Step 4: Simplify right side
    21,017.87x = 336,072,931.37
  5. Step 5: Solve for x
    x = 336,072,931.37/21,017.87
  6. Step 6: Final answer
    x = 15,989.87

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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.