Home / 30,430.50-45,649.60-10,443.89

Finding the Fourth Proportional to 30,430.50, 45,649.60 and 10,443.89

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Solution

The fourth proportional to 30,430.50, 45,649.60 and 10,443.89 is: 15,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430.50 : 45,649.60 = 10,443.89 : x
  2. Step 2: Convert to fraction form
    30,430.50/45,649.60 = 10,443.89/x
  3. Step 3: Cross multiply
    30,430.50x = 45,649.60 × 10,443.89
  4. Step 4: Simplify right side
    30,430.50x = 476,759,400.94
  5. Step 5: Solve for x
    x = 476,759,400.94/30,430.50
  6. Step 6: Final answer
    x = 15,667.16

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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.