Home / 20,982,006.60-31,473,009.90-12,457,955.40

Finding the Fourth Proportional to 20,982,006.60, 31,473,009.90 and 12,457,955.40

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Solution

The fourth proportional to 20,982,006.60, 31,473,009.90 and 12,457,955.40 is: 18,686,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,006.60 : 31,473,009.90 = 12,457,955.40 : x
  2. Step 2: Convert to fraction form
    20,982,006.60/31,473,009.90 = 12,457,955.40/x
  3. Step 3: Cross multiply
    20,982,006.60x = 31,473,009.90 × 12,457,955.40
  4. Step 4: Simplify right side
    20,982,006.60x = 392,089,353,637,958.44
  5. Step 5: Solve for x
    x = 392,089,353,637,958.44/20,982,006.60
  6. Step 6: Final answer
    x = 18,686,933.10

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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.