Home / 21,056,808.29-31,494,030.90-12,400,274.09

Finding the Fourth Proportional to 21,056,808.29, 31,494,030.90 and 12,400,274.09

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Solution

The fourth proportional to 21,056,808.29, 31,494,030.90 and 12,400,274.09 is: 18,546,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056,808.29 : 31,494,030.90 = 12,400,274.09 : x
  2. Step 2: Convert to fraction form
    21,056,808.29/31,494,030.90 = 12,400,274.09/x
  3. Step 3: Cross multiply
    21,056,808.29x = 31,494,030.90 × 12,400,274.09
  4. Step 4: Simplify right side
    21,056,808.29x = 390,534,615,201,459.25
  5. Step 5: Solve for x
    x = 390,534,615,201,459.25/21,056,808.29
  6. Step 6: Final answer
    x = 18,546,714.67

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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.