Home / 30,417.81-45,614.44-12,636.34

Finding the Fourth Proportional to 30,417.81, 45,614.44 and 12,636.34

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Solution

The fourth proportional to 30,417.81, 45,614.44 and 12,636.34 is: 18,949.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,417.81 : 45,614.44 = 12,636.34 : x
  2. Step 2: Convert to fraction form
    30,417.81/45,614.44 = 12,636.34/x
  3. Step 3: Cross multiply
    30,417.81x = 45,614.44 × 12,636.34
  4. Step 4: Simplify right side
    30,417.81x = 576,399,572.75
  5. Step 5: Solve for x
    x = 576,399,572.75/30,417.81
  6. Step 6: Final answer
    x = 18,949.41

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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.