Home / 28,955.43-39,962.79-18,346.05

Finding the Fourth Proportional to 28,955.43, 39,962.79 and 18,346.05

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Solution

The fourth proportional to 28,955.43, 39,962.79 and 18,346.05 is: 25,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955.43 : 39,962.79 = 18,346.05 : x
  2. Step 2: Convert to fraction form
    28,955.43/39,962.79 = 18,346.05/x
  3. Step 3: Cross multiply
    28,955.43x = 39,962.79 × 18,346.05
  4. Step 4: Simplify right side
    28,955.43x = 733,159,343.48
  5. Step 5: Solve for x
    x = 733,159,343.48/28,955.43
  6. Step 6: Final answer
    x = 25,320.27

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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.