Home / 18,420,585,801.27-25,420,408,208.93-9,962,409,578.53

Finding the Fourth Proportional to 18,420,585,801.27, 25,420,408,208.93 and 9,962,409,578.53

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Solution

The fourth proportional to 18,420,585,801.27, 25,420,408,208.93 and 9,962,409,578.53 is: 13,748,125,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420,585,801.27 : 25,420,408,208.93 = 9,962,409,578.53 : x
  2. Step 2: Convert to fraction form
    18,420,585,801.27/25,420,408,208.93 = 9,962,409,578.53/x
  3. Step 3: Cross multiply
    18,420,585,801.27x = 25,420,408,208.93 × 9,962,409,578.53
  4. Step 4: Simplify right side
    18,420,585,801.27x = 253,248,518,230,759,309,312
  5. Step 5: Solve for x
    x = 253,248,518,230,759,309,312/18,420,585,801.27
  6. Step 6: Final answer
    x = 13,748,125,111.92

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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.