Home / 20,624.47-28,440.25-12,239.35

Finding the Fourth Proportional to 20,624.47, 28,440.25 and 12,239.35

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Solution

The fourth proportional to 20,624.47, 28,440.25 and 12,239.35 is: 16,877.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.47 : 28,440.25 = 12,239.35 : x
  2. Step 2: Convert to fraction form
    20,624.47/28,440.25 = 12,239.35/x
  3. Step 3: Cross multiply
    20,624.47x = 28,440.25 × 12,239.35
  4. Step 4: Simplify right side
    20,624.47x = 348,090,173.84
  5. Step 5: Solve for x
    x = 348,090,173.84/20,624.47
  6. Step 6: Final answer
    x = 16,877.53

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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.