Home / 15,666,697,842.54-21,620,573,642.52-8,530,388,421.90

Finding the Fourth Proportional to 15,666,697,842.54, 21,620,573,642.52 and 8,530,388,421.90

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Solution

The fourth proportional to 15,666,697,842.54, 21,620,573,642.52 and 8,530,388,421.90 is: 11,772,224,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,666,697,842.54 : 21,620,573,642.52 = 8,530,388,421.90 : x
  2. Step 2: Convert to fraction form
    15,666,697,842.54/21,620,573,642.52 = 8,530,388,421.90/x
  3. Step 3: Cross multiply
    15,666,697,842.54x = 21,620,573,642.52 × 8,530,388,421.90
  4. Step 4: Simplify right side
    15,666,697,842.54x = 184,431,891,074,988,900,352
  5. Step 5: Solve for x
    x = 184,431,891,074,988,900,352/15,666,697,842.54
  6. Step 6: Final answer
    x = 11,772,224,940.36

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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.