Home / 30,215.07-45,327.18-15,415.89

Finding the Fourth Proportional to 30,215.07, 45,327.18 and 15,415.89

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Solution

The fourth proportional to 30,215.07, 45,327.18 and 15,415.89 is: 23,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.07 : 45,327.18 = 15,415.89 : x
  2. Step 2: Convert to fraction form
    30,215.07/45,327.18 = 15,415.89/x
  3. Step 3: Cross multiply
    30,215.07x = 45,327.18 × 15,415.89
  4. Step 4: Simplify right side
    30,215.07x = 698,758,820.89
  5. Step 5: Solve for x
    x = 698,758,820.89/30,215.07
  6. Step 6: Final answer
    x = 23,126.17

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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.