Home / 18,729.34-25,840.29-12,359.10

Finding the Fourth Proportional to 18,729.34, 25,840.29 and 12,359.10

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Solution

The fourth proportional to 18,729.34, 25,840.29 and 12,359.10 is: 17,051.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.34 : 25,840.29 = 12,359.10 : x
  2. Step 2: Convert to fraction form
    18,729.34/25,840.29 = 12,359.10/x
  3. Step 3: Cross multiply
    18,729.34x = 25,840.29 × 12,359.10
  4. Step 4: Simplify right side
    18,729.34x = 319,362,598.94
  5. Step 5: Solve for x
    x = 319,362,598.94/18,729.34
  6. Step 6: Final answer
    x = 17,051.46

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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.