Home / 21,779.87-30,056.09-12,089.23

Finding the Fourth Proportional to 21,779.87, 30,056.09 and 12,089.23

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Solution

The fourth proportional to 21,779.87, 30,056.09 and 12,089.23 is: 16,683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.87 : 30,056.09 = 12,089.23 : x
  2. Step 2: Convert to fraction form
    21,779.87/30,056.09 = 12,089.23/x
  3. Step 3: Cross multiply
    21,779.87x = 30,056.09 × 12,089.23
  4. Step 4: Simplify right side
    21,779.87x = 363,354,849.32
  5. Step 5: Solve for x
    x = 363,354,849.32/21,779.87
  6. Step 6: Final answer
    x = 16,683.06

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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.