Home / 15,255,778,313.43-21,053,430,223.85-8,388,818,236.78

Finding the Fourth Proportional to 15,255,778,313.43, 21,053,430,223.85 and 8,388,818,236.78

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Solution

The fourth proportional to 15,255,778,313.43, 21,053,430,223.85 and 8,388,818,236.78 is: 11,576,819,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255,778,313.43 : 21,053,430,223.85 = 8,388,818,236.78 : x
  2. Step 2: Convert to fraction form
    15,255,778,313.43/21,053,430,223.85 = 8,388,818,236.78/x
  3. Step 3: Cross multiply
    15,255,778,313.43x = 21,053,430,223.85 × 8,388,818,236.78
  4. Step 4: Simplify right side
    15,255,778,313.43x = 176,613,399,408,580,657,152
  5. Step 5: Solve for x
    x = 176,613,399,408,580,657,152/15,255,778,313.43
  6. Step 6: Final answer
    x = 11,576,819,994.37

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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.