Home / 19,779.23-27,325.01-12,989.36

Finding the Fourth Proportional to 19,779.23, 27,325.01 and 12,989.36

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Solution

The fourth proportional to 19,779.23, 27,325.01 and 12,989.36 is: 17,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.23 : 27,325.01 = 12,989.36 : x
  2. Step 2: Convert to fraction form
    19,779.23/27,325.01 = 12,989.36/x
  3. Step 3: Cross multiply
    19,779.23x = 27,325.01 × 12,989.36
  4. Step 4: Simplify right side
    19,779.23x = 354,934,326.95
  5. Step 5: Solve for x
    x = 354,934,326.95/19,779.23
  6. Step 6: Final answer
    x = 17,944.80

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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.