Home / 28,786.78-42,929.06-25,601.05

Finding the Fourth Proportional to 28,786.78, 42,929.06 and 25,601.05

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Solution

The fourth proportional to 28,786.78, 42,929.06 and 25,601.05 is: 38,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.78 : 42,929.06 = 25,601.05 : x
  2. Step 2: Convert to fraction form
    28,786.78/42,929.06 = 25,601.05/x
  3. Step 3: Cross multiply
    28,786.78x = 42,929.06 × 25,601.05
  4. Step 4: Simplify right side
    28,786.78x = 1,099,029,011.51
  5. Step 5: Solve for x
    x = 1,099,029,011.51/28,786.78
  6. Step 6: Final answer
    x = 38,178.25

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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.