Home / 28,338,090.36-42,487,413-12,555,030.78

Finding the Fourth Proportional to 28,338,090.36, 42,487,413 and 12,555,030.78

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Solution

The fourth proportional to 28,338,090.36, 42,487,413 and 12,555,030.78 is: 18,823,808.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338,090.36 : 42,487,413 = 12,555,030.78 : x
  2. Step 2: Convert to fraction form
    28,338,090.36/42,487,413 = 12,555,030.78/x
  3. Step 3: Cross multiply
    28,338,090.36x = 42,487,413 × 12,555,030.78
  4. Step 4: Simplify right side
    28,338,090.36x = 533,430,777,977,572.12
  5. Step 5: Solve for x
    x = 533,430,777,977,572.12/28,338,090.36
  6. Step 6: Final answer
    x = 18,823,808.21

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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.