Home / 15,120,935,487.98-20,866,818,218.64-8,346,694,811.39

Finding the Fourth Proportional to 15,120,935,487.98, 20,866,818,218.64 and 8,346,694,811.39

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Solution

The fourth proportional to 15,120,935,487.98, 20,866,818,218.64 and 8,346,694,811.39 is: 11,518,398,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120,935,487.98 : 20,866,818,218.64 = 8,346,694,811.39 : x
  2. Step 2: Convert to fraction form
    15,120,935,487.98/20,866,818,218.64 = 8,346,694,811.39/x
  3. Step 3: Cross multiply
    15,120,935,487.98x = 20,866,818,218.64 × 8,346,694,811.39
  4. Step 4: Simplify right side
    15,120,935,487.98x = 174,168,963,355,636,465,664
  5. Step 5: Solve for x
    x = 174,168,963,355,636,465,664/15,120,935,487.98
  6. Step 6: Final answer
    x = 11,518,398,679.38

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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.