Home / 30,877.12-46,377.68-18,421.45

Finding the Fourth Proportional to 30,877.12, 46,377.68 and 18,421.45

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Solution

The fourth proportional to 30,877.12, 46,377.68 and 18,421.45 is: 27,669.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,877.12 : 46,377.68 = 18,421.45 : x
  2. Step 2: Convert to fraction form
    30,877.12/46,377.68 = 18,421.45/x
  3. Step 3: Cross multiply
    30,877.12x = 46,377.68 × 18,421.45
  4. Step 4: Simplify right side
    30,877.12x = 854,343,905.18
  5. Step 5: Solve for x
    x = 854,343,905.18/30,877.12
  6. Step 6: Final answer
    x = 27,669.16

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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.