Home / 21,312,089.40-31,968,134.10-13,249,932.60

Finding the Fourth Proportional to 21,312,089.40, 31,968,134.10 and 13,249,932.60

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Solution

The fourth proportional to 21,312,089.40, 31,968,134.10 and 13,249,932.60 is: 19,874,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,089.40 : 31,968,134.10 = 13,249,932.60 : x
  2. Step 2: Convert to fraction form
    21,312,089.40/31,968,134.10 = 13,249,932.60/x
  3. Step 3: Cross multiply
    21,312,089.40x = 31,968,134.10 × 13,249,932.60
  4. Step 4: Simplify right side
    21,312,089.40x = 423,575,622,172,761.69
  5. Step 5: Solve for x
    x = 423,575,622,172,761.69/21,312,089.40
  6. Step 6: Final answer
    x = 19,874,898.90

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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.