Home / 30,457.28-45,674.40-12,935.36

Finding the Fourth Proportional to 30,457.28, 45,674.40 and 12,935.36

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Solution

The fourth proportional to 30,457.28, 45,674.40 and 12,935.36 is: 19,398.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457.28 : 45,674.40 = 12,935.36 : x
  2. Step 2: Convert to fraction form
    30,457.28/45,674.40 = 12,935.36/x
  3. Step 3: Cross multiply
    30,457.28x = 45,674.40 × 12,935.36
  4. Step 4: Simplify right side
    30,457.28x = 590,814,806.78
  5. Step 5: Solve for x
    x = 590,814,806.78/30,457.28
  6. Step 6: Final answer
    x = 19,398.15

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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.