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Finding the Fourth Proportional to 12,458,547.45, 18,687,821.18 and 12,458,547.45

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Solution

The fourth proportional to 12,458,547.45, 18,687,821.18 and 12,458,547.45 is: 18,687,821.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,547.45 : 18,687,821.18 = 12,458,547.45 : x
  2. Step 2: Convert to fraction form
    12,458,547.45/18,687,821.18 = 12,458,547.45/x
  3. Step 3: Cross multiply
    12,458,547.45x = 18,687,821.18 × 12,458,547.45
  4. Step 4: Simplify right side
    12,458,547.45x = 232,823,106,845,852.25
  5. Step 5: Solve for x
    x = 232,823,106,845,852.25/12,458,547.45
  6. Step 6: Final answer
    x = 18,687,821.18

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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.