Home / 12,985.00-19,477.89-4,100.40

Finding the Fourth Proportional to 12,985.00, 19,477.89 and 4,100.40

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Solution

The fourth proportional to 12,985.00, 19,477.89 and 4,100.40 is: 6,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.00 : 19,477.89 = 4,100.40 : x
  2. Step 2: Convert to fraction form
    12,985.00/19,477.89 = 4,100.40/x
  3. Step 3: Cross multiply
    12,985.00x = 19,477.89 × 4,100.40
  4. Step 4: Simplify right side
    12,985.00x = 79,867,140.16
  5. Step 5: Solve for x
    x = 79,867,140.16/12,985.00
  6. Step 6: Final answer
    x = 6,150.72

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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.