Home / 12,999,142.92-17,938,598.52-7,197,799.80

Finding the Fourth Proportional to 12,999,142.92, 17,938,598.52 and 7,197,799.80

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Solution

The fourth proportional to 12,999,142.92, 17,938,598.52 and 7,197,799.80 is: 9,932,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,142.92 : 17,938,598.52 = 7,197,799.80 : x
  2. Step 2: Convert to fraction form
    12,999,142.92/17,938,598.52 = 7,197,799.80/x
  3. Step 3: Cross multiply
    12,999,142.92x = 17,938,598.52 × 7,197,799.80
  4. Step 4: Simplify right side
    12,999,142.92x = 129,118,440,839,536.30
  5. Step 5: Solve for x
    x = 129,118,440,839,536.30/12,999,142.92
  6. Step 6: Final answer
    x = 9,932,842.62

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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.