Home / 21,118,688.48-31,693,140.86-8,996,643.20

Finding the Fourth Proportional to 21,118,688.48, 31,693,140.86 and 8,996,643.20

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Solution

The fourth proportional to 21,118,688.48, 31,693,140.86 and 8,996,643.20 is: 13,501,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118,688.48 : 31,693,140.86 = 8,996,643.20 : x
  2. Step 2: Convert to fraction form
    21,118,688.48/31,693,140.86 = 8,996,643.20/x
  3. Step 3: Cross multiply
    21,118,688.48x = 31,693,140.86 × 8,996,643.20
  4. Step 4: Simplify right side
    21,118,688.48x = 285,131,880,204,761.12
  5. Step 5: Solve for x
    x = 285,131,880,204,761.12/21,118,688.48
  6. Step 6: Final answer
    x = 13,501,400.93

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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.