Home / 28,609.95-39,483.72-15,864.31

Finding the Fourth Proportional to 28,609.95, 39,483.72 and 15,864.31

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Solution

The fourth proportional to 28,609.95, 39,483.72 and 15,864.31 is: 21,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.95 : 39,483.72 = 15,864.31 : x
  2. Step 2: Convert to fraction form
    28,609.95/39,483.72 = 15,864.31/x
  3. Step 3: Cross multiply
    28,609.95x = 39,483.72 × 15,864.31
  4. Step 4: Simplify right side
    28,609.95x = 626,381,835.66
  5. Step 5: Solve for x
    x = 626,381,835.66/28,609.95
  6. Step 6: Final answer
    x = 21,893.85

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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.