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Finding the Fourth Proportional to 30,903.48, 46,354.74 and 12,435

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Solution

The fourth proportional to 30,903.48, 46,354.74 and 12,435 is: 18,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.48 : 46,354.74 = 12,435 : x
  2. Step 2: Convert to fraction form
    30,903.48/46,354.74 = 12,435/x
  3. Step 3: Cross multiply
    30,903.48x = 46,354.74 × 12,435
  4. Step 4: Simplify right side
    30,903.48x = 576,421,191.90
  5. Step 5: Solve for x
    x = 576,421,191.90/30,903.48
  6. Step 6: Final answer
    x = 18,652.31

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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.