Home / 42,039.47-63,048.44-12,450.39

Finding the Fourth Proportional to 42,039.47, 63,048.44 and 12,450.39

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Solution

The fourth proportional to 42,039.47, 63,048.44 and 12,450.39 is: 18,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,039.47 : 63,048.44 = 12,450.39 : x
  2. Step 2: Convert to fraction form
    42,039.47/63,048.44 = 12,450.39/x
  3. Step 3: Cross multiply
    42,039.47x = 63,048.44 × 12,450.39
  4. Step 4: Simplify right side
    42,039.47x = 784,977,461.59
  5. Step 5: Solve for x
    x = 784,977,461.59/42,039.47
  6. Step 6: Final answer
    x = 18,672.39

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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.