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Finding the Fourth Proportional to 30,409.95, 45,595.25 and 12,652.82

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Solution

The fourth proportional to 30,409.95, 45,595.25 and 12,652.82 is: 18,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,409.95 : 45,595.25 = 12,652.82 : x
  2. Step 2: Convert to fraction form
    30,409.95/45,595.25 = 12,652.82/x
  3. Step 3: Cross multiply
    30,409.95x = 45,595.25 × 12,652.82
  4. Step 4: Simplify right side
    30,409.95x = 576,908,473.52
  5. Step 5: Solve for x
    x = 576,908,473.52/30,409.95
  6. Step 6: Final answer
    x = 18,971.04

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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.