Home / 12,539,979.90-18,809,969.85-10,626,792.30

Finding the Fourth Proportional to 12,539,979.90, 18,809,969.85 and 10,626,792.30

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Solution

The fourth proportional to 12,539,979.90, 18,809,969.85 and 10,626,792.30 is: 15,940,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539,979.90 : 18,809,969.85 = 10,626,792.30 : x
  2. Step 2: Convert to fraction form
    12,539,979.90/18,809,969.85 = 10,626,792.30/x
  3. Step 3: Cross multiply
    12,539,979.90x = 18,809,969.85 × 10,626,792.30
  4. Step 4: Simplify right side
    12,539,979.90x = 199,889,642,765,212.19
  5. Step 5: Solve for x
    x = 199,889,642,765,212.19/12,539,979.90
  6. Step 6: Final answer
    x = 15,940,188.45

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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.