Home / 12,302.88-18,365.70-11,428.08

Finding the Fourth Proportional to 12,302.88, 18,365.70 and 11,428.08

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Solution

The fourth proportional to 12,302.88, 18,365.70 and 11,428.08 is: 17,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.88 : 18,365.70 = 11,428.08 : x
  2. Step 2: Convert to fraction form
    12,302.88/18,365.70 = 11,428.08/x
  3. Step 3: Cross multiply
    12,302.88x = 18,365.70 × 11,428.08
  4. Step 4: Simplify right side
    12,302.88x = 209,884,688.86
  5. Step 5: Solve for x
    x = 209,884,688.86/12,302.88
  6. Step 6: Final answer
    x = 17,059.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.