Home / 28,929.51-43,421-17,857.83

Finding the Fourth Proportional to 28,929.51, 43,421 and 17,857.83

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Solution

The fourth proportional to 28,929.51, 43,421 and 17,857.83 is: 26,803.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.51 : 43,421 = 17,857.83 : x
  2. Step 2: Convert to fraction form
    28,929.51/43,421 = 17,857.83/x
  3. Step 3: Cross multiply
    28,929.51x = 43,421 × 17,857.83
  4. Step 4: Simplify right side
    28,929.51x = 775,404,836.43
  5. Step 5: Solve for x
    x = 775,404,836.43/28,929.51
  6. Step 6: Final answer
    x = 26,803.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.