Home / 28,424.37-39,225.09-15,678.73

Finding the Fourth Proportional to 28,424.37, 39,225.09 and 15,678.73

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Solution

The fourth proportional to 28,424.37, 39,225.09 and 15,678.73 is: 21,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.37 : 39,225.09 = 15,678.73 : x
  2. Step 2: Convert to fraction form
    28,424.37/39,225.09 = 15,678.73/x
  3. Step 3: Cross multiply
    28,424.37x = 39,225.09 × 15,678.73
  4. Step 4: Simplify right side
    28,424.37x = 614,999,595.34
  5. Step 5: Solve for x
    x = 614,999,595.34/28,424.37
  6. Step 6: Final answer
    x = 21,636.35

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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.