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Finding the Fourth Proportional to 30,368.90, 45,516.90 and 15,570.20

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Solution

The fourth proportional to 30,368.90, 45,516.90 and 15,570.20 is: 23,336.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.90 : 45,516.90 = 15,570.20 : x
  2. Step 2: Convert to fraction form
    30,368.90/45,516.90 = 15,570.20/x
  3. Step 3: Cross multiply
    30,368.90x = 45,516.90 × 15,570.20
  4. Step 4: Simplify right side
    30,368.90x = 708,707,236.38
  5. Step 5: Solve for x
    x = 708,707,236.38/30,368.90
  6. Step 6: Final answer
    x = 23,336.61

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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.