Home / 13,640,000.76-18,821,860.92-7,528,035.60

Finding the Fourth Proportional to 13,640,000.76, 18,821,860.92 and 7,528,035.60

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Solution

The fourth proportional to 13,640,000.76, 18,821,860.92 and 7,528,035.60 is: 10,387,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,000.76 : 18,821,860.92 = 7,528,035.60 : x
  2. Step 2: Convert to fraction form
    13,640,000.76/18,821,860.92 = 7,528,035.60/x
  3. Step 3: Cross multiply
    13,640,000.76x = 18,821,860.92 × 7,528,035.60
  4. Step 4: Simplify right side
    13,640,000.76x = 141,691,639,064,008.75
  5. Step 5: Solve for x
    x = 141,691,639,064,008.75/13,640,000.76
  6. Step 6: Final answer
    x = 10,387,949.50

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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.