Home / 12,481,402.80-18,684,779.40-7,430,113.20

Finding the Fourth Proportional to 12,481,402.80, 18,684,779.40 and 7,430,113.20

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Solution

The fourth proportional to 12,481,402.80, 18,684,779.40 and 7,430,113.20 is: 11,122,950.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481,402.80 : 18,684,779.40 = 7,430,113.20 : x
  2. Step 2: Convert to fraction form
    12,481,402.80/18,684,779.40 = 7,430,113.20/x
  3. Step 3: Cross multiply
    12,481,402.80x = 18,684,779.40 × 7,430,113.20
  4. Step 4: Simplify right side
    12,481,402.80x = 138,830,026,059,028.08
  5. Step 5: Solve for x
    x = 138,830,026,059,028.08/12,481,402.80
  6. Step 6: Final answer
    x = 11,122,950.54

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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.