Home / 28,629.36-42,926.40-9,905.04

Finding the Fourth Proportional to 28,629.36, 42,926.40 and 9,905.04

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Solution

The fourth proportional to 28,629.36, 42,926.40 and 9,905.04 is: 14,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.36 : 42,926.40 = 9,905.04 : x
  2. Step 2: Convert to fraction form
    28,629.36/42,926.40 = 9,905.04/x
  3. Step 3: Cross multiply
    28,629.36x = 42,926.40 × 9,905.04
  4. Step 4: Simplify right side
    28,629.36x = 425,187,709.06
  5. Step 5: Solve for x
    x = 425,187,709.06/28,629.36
  6. Step 6: Final answer
    x = 14,851.46

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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.