Home / 13,129,780.94-18,119,383-7,249,395.60

Finding the Fourth Proportional to 13,129,780.94, 18,119,383 and 7,249,395.60

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Solution

The fourth proportional to 13,129,780.94, 18,119,383 and 7,249,395.60 is: 10,004,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,780.94 : 18,119,383 = 7,249,395.60 : x
  2. Step 2: Convert to fraction form
    13,129,780.94/18,119,383 = 7,249,395.60/x
  3. Step 3: Cross multiply
    13,129,780.94x = 18,119,383 × 7,249,395.60
  4. Step 4: Simplify right side
    13,129,780.94x = 131,354,575,394,914.80
  5. Step 5: Solve for x
    x = 131,354,575,394,914.80/13,129,780.94
  6. Step 6: Final answer
    x = 10,004,323.45

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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.