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Finding the Fourth Proportional to 18,869.30, 26,051.02 and 12,501.29

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Solution

The fourth proportional to 18,869.30, 26,051.02 and 12,501.29 is: 17,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.30 : 26,051.02 = 12,501.29 : x
  2. Step 2: Convert to fraction form
    18,869.30/26,051.02 = 12,501.29/x
  3. Step 3: Cross multiply
    18,869.30x = 26,051.02 × 12,501.29
  4. Step 4: Simplify right side
    18,869.30x = 325,671,243.15
  5. Step 5: Solve for x
    x = 325,671,243.15/18,869.30
  6. Step 6: Final answer
    x = 17,259.31

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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.