Home / 19,913.40-29,870.10-13,692.60

Finding the Fourth Proportional to 19,913.40, 29,870.10 and 13,692.60

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Solution

The fourth proportional to 19,913.40, 29,870.10 and 13,692.60 is: 20,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.40 : 29,870.10 = 13,692.60 : x
  2. Step 2: Convert to fraction form
    19,913.40/29,870.10 = 13,692.60/x
  3. Step 3: Cross multiply
    19,913.40x = 29,870.10 × 13,692.60
  4. Step 4: Simplify right side
    19,913.40x = 408,999,331.26
  5. Step 5: Solve for x
    x = 408,999,331.26/19,913.40
  6. Step 6: Final answer
    x = 20,538.90

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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.