Home / 30,312.60-45,473.76-20,475.96

Finding the Fourth Proportional to 30,312.60, 45,473.76 and 20,475.96

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Solution

The fourth proportional to 30,312.60, 45,473.76 and 20,475.96 is: 30,717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,312.60 : 45,473.76 = 20,475.96 : x
  2. Step 2: Convert to fraction form
    30,312.60/45,473.76 = 20,475.96/x
  3. Step 3: Cross multiply
    30,312.60x = 45,473.76 × 20,475.96
  4. Step 4: Simplify right side
    30,312.60x = 931,118,890.81
  5. Step 5: Solve for x
    x = 931,118,890.81/30,312.60
  6. Step 6: Final answer
    x = 30,717.22

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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.