Home / 21,579.37-29,779.08-12,019.23

Finding the Fourth Proportional to 21,579.37, 29,779.08 and 12,019.23

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Solution

The fourth proportional to 21,579.37, 29,779.08 and 12,019.23 is: 16,586.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.37 : 29,779.08 = 12,019.23 : x
  2. Step 2: Convert to fraction form
    21,579.37/29,779.08 = 12,019.23/x
  3. Step 3: Cross multiply
    21,579.37x = 29,779.08 × 12,019.23
  4. Step 4: Simplify right side
    21,579.37x = 357,921,551.61
  5. Step 5: Solve for x
    x = 357,921,551.61/21,579.37
  6. Step 6: Final answer
    x = 16,586.28

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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.