Home / 13,259,978,718.72-18,299,203,731.20-7,238,805,182.08

Finding the Fourth Proportional to 13,259,978,718.72, 18,299,203,731.20 and 7,238,805,182.08

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Solution

The fourth proportional to 13,259,978,718.72, 18,299,203,731.20 and 7,238,805,182.08 is: 9,989,787,586.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259,978,718.72 : 18,299,203,731.20 = 7,238,805,182.08 : x
  2. Step 2: Convert to fraction form
    13,259,978,718.72/18,299,203,731.20 = 7,238,805,182.08/x
  3. Step 3: Cross multiply
    13,259,978,718.72x = 18,299,203,731.20 × 7,238,805,182.08
  4. Step 4: Simplify right side
    13,259,978,718.72x = 132,464,370,797,348,241,408
  5. Step 5: Solve for x
    x = 132,464,370,797,348,241,408/13,259,978,718.72
  6. Step 6: Final answer
    x = 9,989,787,586.19

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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.