Home / 18,457.49-27,690.29-5,978.76

Finding the Fourth Proportional to 18,457.49, 27,690.29 and 5,978.76

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Solution

The fourth proportional to 18,457.49, 27,690.29 and 5,978.76 is: 8,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.49 : 27,690.29 = 5,978.76 : x
  2. Step 2: Convert to fraction form
    18,457.49/27,690.29 = 5,978.76/x
  3. Step 3: Cross multiply
    18,457.49x = 27,690.29 × 5,978.76
  4. Step 4: Simplify right side
    18,457.49x = 165,553,568.35
  5. Step 5: Solve for x
    x = 165,553,568.35/18,457.49
  6. Step 6: Final answer
    x = 8,969.45

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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.