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Finding the Fourth Proportional to 30,420.49, 45,652.62 and 10,715.62

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Solution

The fourth proportional to 30,420.49, 45,652.62 and 10,715.62 is: 16,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.49 : 45,652.62 = 10,715.62 : x
  2. Step 2: Convert to fraction form
    30,420.49/45,652.62 = 10,715.62/x
  3. Step 3: Cross multiply
    30,420.49x = 45,652.62 × 10,715.62
  4. Step 4: Simplify right side
    30,420.49x = 489,196,127.92
  5. Step 5: Solve for x
    x = 489,196,127.92/30,420.49
  6. Step 6: Final answer
    x = 16,081.14

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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.