Home / 28,860.06-39,815.64-19,434.90

Finding the Fourth Proportional to 28,860.06, 39,815.64 and 19,434.90

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Solution

The fourth proportional to 28,860.06, 39,815.64 and 19,434.90 is: 26,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.06 : 39,815.64 = 19,434.90 : x
  2. Step 2: Convert to fraction form
    28,860.06/39,815.64 = 19,434.90/x
  3. Step 3: Cross multiply
    28,860.06x = 39,815.64 × 19,434.90
  4. Step 4: Simplify right side
    28,860.06x = 773,812,981.84
  5. Step 5: Solve for x
    x = 773,812,981.84/28,860.06
  6. Step 6: Final answer
    x = 26,812.59

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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.