Home / 12,457,070.80-18,685,606.20-12,289,109.20

Finding the Fourth Proportional to 12,457,070.80, 18,685,606.20 and 12,289,109.20

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Solution

The fourth proportional to 12,457,070.80, 18,685,606.20 and 12,289,109.20 is: 18,433,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,070.80 : 18,685,606.20 = 12,289,109.20 : x
  2. Step 2: Convert to fraction form
    12,457,070.80/18,685,606.20 = 12,289,109.20/x
  3. Step 3: Cross multiply
    12,457,070.80x = 18,685,606.20 × 12,289,109.20
  4. Step 4: Simplify right side
    12,457,070.80x = 229,629,455,059,997.03
  5. Step 5: Solve for x
    x = 229,629,455,059,997.03/12,457,070.80
  6. Step 6: Final answer
    x = 18,433,663.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.