Home / 12,742.98-19,092.90-7,802.30

Finding the Fourth Proportional to 12,742.98, 19,092.90 and 7,802.30

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Solution

The fourth proportional to 12,742.98, 19,092.90 and 7,802.30 is: 11,690.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.98 : 19,092.90 = 7,802.30 : x
  2. Step 2: Convert to fraction form
    12,742.98/19,092.90 = 7,802.30/x
  3. Step 3: Cross multiply
    12,742.98x = 19,092.90 × 7,802.30
  4. Step 4: Simplify right side
    12,742.98x = 148,968,581.40
  5. Step 5: Solve for x
    x = 148,968,581.40/12,742.98
  6. Step 6: Final answer
    x = 11,690.25

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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.