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Finding the Fourth Proportional to 42,405.19, 63,636.94 and 14,703.19

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Solution

The fourth proportional to 42,405.19, 63,636.94 and 14,703.19 is: 22,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,405.19 : 63,636.94 = 14,703.19 : x
  2. Step 2: Convert to fraction form
    42,405.19/63,636.94 = 14,703.19/x
  3. Step 3: Cross multiply
    42,405.19x = 63,636.94 × 14,703.19
  4. Step 4: Simplify right side
    42,405.19x = 935,665,879.13
  5. Step 5: Solve for x
    x = 935,665,879.13/42,405.19
  6. Step 6: Final answer
    x = 22,064.89

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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.