Home / 21,309,969.60-31,968,064.80-6,930,590.40

Finding the Fourth Proportional to 21,309,969.60, 31,968,064.80 and 6,930,590.40

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Solution

The fourth proportional to 21,309,969.60, 31,968,064.80 and 6,930,590.40 is: 10,396,897.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,969.60 : 31,968,064.80 = 6,930,590.40 : x
  2. Step 2: Convert to fraction form
    21,309,969.60/31,968,064.80 = 6,930,590.40/x
  3. Step 3: Cross multiply
    21,309,969.60x = 31,968,064.80 × 6,930,590.40
  4. Step 4: Simplify right side
    21,309,969.60x = 221,557,563,009,457.94
  5. Step 5: Solve for x
    x = 221,557,563,009,457.94/21,309,969.60
  6. Step 6: Final answer
    x = 10,396,897.19

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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.