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Finding the Fourth Proportional to 18,462,802.40, 27,693,944.40 and 8,365,407.20

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Solution

The fourth proportional to 18,462,802.40, 27,693,944.40 and 8,365,407.20 is: 12,547,993.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462,802.40 : 27,693,944.40 = 8,365,407.20 : x
  2. Step 2: Convert to fraction form
    18,462,802.40/27,693,944.40 = 8,365,407.20/x
  3. Step 3: Cross multiply
    18,462,802.40x = 27,693,944.40 × 8,365,407.20
  4. Step 4: Simplify right side
    18,462,802.40x = 231,671,121,880,159.69
  5. Step 5: Solve for x
    x = 231,671,121,880,159.69/18,462,802.40
  6. Step 6: Final answer
    x = 12,547,993.36

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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.