Home / 20,392,265.21-28,142,068.60-11,099,386.16

Finding the Fourth Proportional to 20,392,265.21, 28,142,068.60 and 11,099,386.16

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Solution

The fourth proportional to 20,392,265.21, 28,142,068.60 and 11,099,386.16 is: 15,317,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,265.21 : 28,142,068.60 = 11,099,386.16 : x
  2. Step 2: Convert to fraction form
    20,392,265.21/28,142,068.60 = 11,099,386.16/x
  3. Step 3: Cross multiply
    20,392,265.21x = 28,142,068.60 × 11,099,386.16
  4. Step 4: Simplify right side
    20,392,265.21x = 312,359,686,648,862.06
  5. Step 5: Solve for x
    x = 312,359,686,648,862.06/20,392,265.21
  6. Step 6: Final answer
    x = 15,317,557.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.