Home / 28,290.08-39,041.04-15,543.58

Finding the Fourth Proportional to 28,290.08, 39,041.04 and 15,543.58

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Solution

The fourth proportional to 28,290.08, 39,041.04 and 15,543.58 is: 21,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.08 : 39,041.04 = 15,543.58 : x
  2. Step 2: Convert to fraction form
    28,290.08/39,041.04 = 15,543.58/x
  3. Step 3: Cross multiply
    28,290.08x = 39,041.04 × 15,543.58
  4. Step 4: Simplify right side
    28,290.08x = 606,837,474.98
  5. Step 5: Solve for x
    x = 606,837,474.98/28,290.08
  6. Step 6: Final answer
    x = 21,450.54

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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.