Home / 28,289.08-39,038.94-15,543.08

Finding the Fourth Proportional to 28,289.08, 39,038.94 and 15,543.08

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Solution

The fourth proportional to 28,289.08, 39,038.94 and 15,543.08 is: 21,449.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.08 : 39,038.94 = 15,543.08 : x
  2. Step 2: Convert to fraction form
    28,289.08/39,038.94 = 15,543.08/x
  3. Step 3: Cross multiply
    28,289.08x = 39,038.94 × 15,543.08
  4. Step 4: Simplify right side
    28,289.08x = 606,785,367.54
  5. Step 5: Solve for x
    x = 606,785,367.54/28,289.08
  6. Step 6: Final answer
    x = 21,449.46

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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.