Home / 18,457.79-25,462.88-12,081.57

Finding the Fourth Proportional to 18,457.79, 25,462.88 and 12,081.57

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Solution

The fourth proportional to 18,457.79, 25,462.88 and 12,081.57 is: 16,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.79 : 25,462.88 = 12,081.57 : x
  2. Step 2: Convert to fraction form
    18,457.79/25,462.88 = 12,081.57/x
  3. Step 3: Cross multiply
    18,457.79x = 25,462.88 × 12,081.57
  4. Step 4: Simplify right side
    18,457.79x = 307,631,526.32
  5. Step 5: Solve for x
    x = 307,631,526.32/18,457.79
  6. Step 6: Final answer
    x = 16,666.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.