Home / 19,638.08-29,376.12-12,607.28

Finding the Fourth Proportional to 19,638.08, 29,376.12 and 12,607.28

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Solution

The fourth proportional to 19,638.08, 29,376.12 and 12,607.28 is: 18,858.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.08 : 29,376.12 = 12,607.28 : x
  2. Step 2: Convert to fraction form
    19,638.08/29,376.12 = 12,607.28/x
  3. Step 3: Cross multiply
    19,638.08x = 29,376.12 × 12,607.28
  4. Step 4: Simplify right side
    19,638.08x = 370,352,970.15
  5. Step 5: Solve for x
    x = 370,352,970.15/19,638.08
  6. Step 6: Final answer
    x = 18,858.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.