Home / 12,457,719.70-18,686,579.55-7,649,818.90

Finding the Fourth Proportional to 12,457,719.70, 18,686,579.55 and 7,649,818.90

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Solution

The fourth proportional to 12,457,719.70, 18,686,579.55 and 7,649,818.90 is: 11,474,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,719.70 : 18,686,579.55 = 7,649,818.90 : x
  2. Step 2: Convert to fraction form
    12,457,719.70/18,686,579.55 = 7,649,818.90/x
  3. Step 3: Cross multiply
    12,457,719.70x = 18,686,579.55 × 7,649,818.90
  4. Step 4: Simplify right side
    12,457,719.70x = 142,948,949,417,943.50
  5. Step 5: Solve for x
    x = 142,948,949,417,943.50/12,457,719.70
  6. Step 6: Final answer
    x = 11,474,728.35

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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.