Home / 20,985,779.03-28,960,435.04-12,166,944.17

Finding the Fourth Proportional to 20,985,779.03, 28,960,435.04 and 12,166,944.17

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Solution

The fourth proportional to 20,985,779.03, 28,960,435.04 and 12,166,944.17 is: 16,790,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,779.03 : 28,960,435.04 = 12,166,944.17 : x
  2. Step 2: Convert to fraction form
    20,985,779.03/28,960,435.04 = 12,166,944.17/x
  3. Step 3: Cross multiply
    20,985,779.03x = 28,960,435.04 × 12,166,944.17
  4. Step 4: Simplify right side
    20,985,779.03x = 352,359,996,064,954.81
  5. Step 5: Solve for x
    x = 352,359,996,064,954.81/20,985,779.03
  6. Step 6: Final answer
    x = 16,790,417.72

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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.