Home / 15,221,469,986.70-21,006,106,263.52-8,791,170,511.33

Finding the Fourth Proportional to 15,221,469,986.70, 21,006,106,263.52 and 8,791,170,511.33

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Solution

The fourth proportional to 15,221,469,986.70, 21,006,106,263.52 and 8,791,170,511.33 is: 12,132,091,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221,469,986.70 : 21,006,106,263.52 = 8,791,170,511.33 : x
  2. Step 2: Convert to fraction form
    15,221,469,986.70/21,006,106,263.52 = 8,791,170,511.33/x
  3. Step 3: Cross multiply
    15,221,469,986.70x = 21,006,106,263.52 × 8,791,170,511.33
  4. Step 4: Simplify right side
    15,221,469,986.70x = 184,668,261,941,721,432,064
  5. Step 5: Solve for x
    x = 184,668,261,941,721,432,064/15,221,469,986.70
  6. Step 6: Final answer
    x = 12,132,091,191.13

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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.