Home / 13,121,172,659.88-18,100,547,448.95-7,969,849,327.19

Finding the Fourth Proportional to 13,121,172,659.88, 18,100,547,448.95 and 7,969,849,327.19

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Solution

The fourth proportional to 13,121,172,659.88, 18,100,547,448.95 and 7,969,849,327.19 is: 10,994,340,189.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,172,659.88 : 18,100,547,448.95 = 7,969,849,327.19 : x
  2. Step 2: Convert to fraction form
    13,121,172,659.88/18,100,547,448.95 = 7,969,849,327.19/x
  3. Step 3: Cross multiply
    13,121,172,659.88x = 18,100,547,448.95 × 7,969,849,327.19
  4. Step 4: Simplify right side
    13,121,172,659.88x = 144,258,635,907,846,012,928
  5. Step 5: Solve for x
    x = 144,258,635,907,846,012,928/13,121,172,659.88
  6. Step 6: Final answer
    x = 10,994,340,189.50

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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.