Home / 13,137,031,689.12-18,128,959,403.76-7,115,387,283.36

Finding the Fourth Proportional to 13,137,031,689.12, 18,128,959,403.76 and 7,115,387,283.36

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Solution

The fourth proportional to 13,137,031,689.12, 18,128,959,403.76 and 7,115,387,283.36 is: 9,819,156,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137,031,689.12 : 18,128,959,403.76 = 7,115,387,283.36 : x
  2. Step 2: Convert to fraction form
    13,137,031,689.12/18,128,959,403.76 = 7,115,387,283.36/x
  3. Step 3: Cross multiply
    13,137,031,689.12x = 18,128,959,403.76 × 7,115,387,283.36
  4. Step 4: Simplify right side
    13,137,031,689.12x = 128,994,567,202,063,581,184
  5. Step 5: Solve for x
    x = 128,994,567,202,063,581,184/13,137,031,689.12
  6. Step 6: Final answer
    x = 9,819,156,279.34

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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.