Home / 28,560,078.31-39,411,802.65-15,507,038.47

Finding the Fourth Proportional to 28,560,078.31, 39,411,802.65 and 15,507,038.47

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Solution

The fourth proportional to 28,560,078.31, 39,411,802.65 and 15,507,038.47 is: 21,399,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560,078.31 : 39,411,802.65 = 15,507,038.47 : x
  2. Step 2: Convert to fraction form
    28,560,078.31/39,411,802.65 = 15,507,038.47/x
  3. Step 3: Cross multiply
    28,560,078.31x = 39,411,802.65 × 15,507,038.47
  4. Step 4: Simplify right side
    28,560,078.31x = 611,160,339,865,598
  5. Step 5: Solve for x
    x = 611,160,339,865,598/28,560,078.31
  6. Step 6: Final answer
    x = 21,399,112.89

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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.