Home / 28,560.67-39,412.71-15,814.40

Finding the Fourth Proportional to 28,560.67, 39,412.71 and 15,814.40

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Solution

The fourth proportional to 28,560.67, 39,412.71 and 15,814.40 is: 21,823.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.67 : 39,412.71 = 15,814.40 : x
  2. Step 2: Convert to fraction form
    28,560.67/39,412.71 = 15,814.40/x
  3. Step 3: Cross multiply
    28,560.67x = 39,412.71 × 15,814.40
  4. Step 4: Simplify right side
    28,560.67x = 623,288,163.96
  5. Step 5: Solve for x
    x = 623,288,163.96/28,560.67
  6. Step 6: Final answer
    x = 21,823.31

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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.