Home / 28,586.86-42,716.49-21,795.09

Finding the Fourth Proportional to 28,586.86, 42,716.49 and 21,795.09

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Solution

The fourth proportional to 28,586.86, 42,716.49 and 21,795.09 is: 32,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,586.86 : 42,716.49 = 21,795.09 : x
  2. Step 2: Convert to fraction form
    28,586.86/42,716.49 = 21,795.09/x
  3. Step 3: Cross multiply
    28,586.86x = 42,716.49 × 21,795.09
  4. Step 4: Simplify right side
    28,586.86x = 931,009,742.40
  5. Step 5: Solve for x
    x = 931,009,742.40/28,586.86
  6. Step 6: Final answer
    x = 32,567.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.