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Finding the Fourth Proportional to 18,712, 25,822.92 and 10,328.32

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Solution

The fourth proportional to 18,712, 25,822.92 and 10,328.32 is: 14,253.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712 : 25,822.92 = 10,328.32 : x
  2. Step 2: Convert to fraction form
    18,712/25,822.92 = 10,328.32/x
  3. Step 3: Cross multiply
    18,712x = 25,822.92 × 10,328.32
  4. Step 4: Simplify right side
    18,712x = 266,707,381.09
  5. Step 5: Solve for x
    x = 266,707,381.09/18,712
  6. Step 6: Final answer
    x = 14,253.28

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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.