Home / 21,325.30-29,427.59-11,765.31

Finding the Fourth Proportional to 21,325.30, 29,427.59 and 11,765.31

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Solution

The fourth proportional to 21,325.30, 29,427.59 and 11,765.31 is: 16,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.30 : 29,427.59 = 11,765.31 : x
  2. Step 2: Convert to fraction form
    21,325.30/29,427.59 = 11,765.31/x
  3. Step 3: Cross multiply
    21,325.30x = 29,427.59 × 11,765.31
  4. Step 4: Simplify right side
    21,325.30x = 346,224,718.90
  5. Step 5: Solve for x
    x = 346,224,718.90/21,325.30
  6. Step 6: Final answer
    x = 16,235.40

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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.