Home / 28,036.50-42,054.76-11,405.58

Finding the Fourth Proportional to 28,036.50, 42,054.76 and 11,405.58

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Solution

The fourth proportional to 28,036.50, 42,054.76 and 11,405.58 is: 17,108.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.50 : 42,054.76 = 11,405.58 : x
  2. Step 2: Convert to fraction form
    28,036.50/42,054.76 = 11,405.58/x
  3. Step 3: Cross multiply
    28,036.50x = 42,054.76 × 11,405.58
  4. Step 4: Simplify right side
    28,036.50x = 479,658,929.56
  5. Step 5: Solve for x
    x = 479,658,929.56/28,036.50
  6. Step 6: Final answer
    x = 17,108.37

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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.