Home / 30,697.21-45,985.60-15,915.79

Finding the Fourth Proportional to 30,697.21, 45,985.60 and 15,915.79

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Solution

The fourth proportional to 30,697.21, 45,985.60 and 15,915.79 is: 23,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.21 : 45,985.60 = 15,915.79 : x
  2. Step 2: Convert to fraction form
    30,697.21/45,985.60 = 15,915.79/x
  3. Step 3: Cross multiply
    30,697.21x = 45,985.60 × 15,915.79
  4. Step 4: Simplify right side
    30,697.21x = 731,897,152.62
  5. Step 5: Solve for x
    x = 731,897,152.62/30,697.21
  6. Step 6: Final answer
    x = 23,842.46

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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.