Home / 39,854.40-59,779.56-13,559.64

Finding the Fourth Proportional to 39,854.40, 59,779.56 and 13,559.64

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Solution

The fourth proportional to 39,854.40, 59,779.56 and 13,559.64 is: 20,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,854.40 : 59,779.56 = 13,559.64 : x
  2. Step 2: Convert to fraction form
    39,854.40/59,779.56 = 13,559.64/x
  3. Step 3: Cross multiply
    39,854.40x = 59,779.56 × 13,559.64
  4. Step 4: Simplify right side
    39,854.40x = 810,589,312.96
  5. Step 5: Solve for x
    x = 810,589,312.96/39,854.40
  6. Step 6: Final answer
    x = 20,338.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.