Home / 12,457,719.40-18,686,579.10-11,701,892.20

Finding the Fourth Proportional to 12,457,719.40, 18,686,579.10 and 11,701,892.20

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Solution

The fourth proportional to 12,457,719.40, 18,686,579.10 and 11,701,892.20 is: 17,552,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,719.40 : 18,686,579.10 = 11,701,892.20 : x
  2. Step 2: Convert to fraction form
    12,457,719.40/18,686,579.10 = 11,701,892.20/x
  3. Step 3: Cross multiply
    12,457,719.40x = 18,686,579.10 × 11,701,892.20
  4. Step 4: Simplify right side
    12,457,719.40x = 218,668,334,214,973.03
  5. Step 5: Solve for x
    x = 218,668,334,214,973.03/12,457,719.40
  6. Step 6: Final answer
    x = 17,552,838.30

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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.