Home / 15,679,965.21-21,636,341.49-9,152,097.45

Finding the Fourth Proportional to 15,679,965.21, 21,636,341.49 and 9,152,097.45

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Solution

The fourth proportional to 15,679,965.21, 21,636,341.49 and 9,152,097.45 is: 12,628,720.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679,965.21 : 21,636,341.49 = 9,152,097.45 : x
  2. Step 2: Convert to fraction form
    15,679,965.21/21,636,341.49 = 9,152,097.45/x
  3. Step 3: Cross multiply
    15,679,965.21x = 21,636,341.49 × 9,152,097.45
  4. Step 4: Simplify right side
    15,679,965.21x = 198,017,905,777,958.16
  5. Step 5: Solve for x
    x = 198,017,905,777,958.16/15,679,965.21
  6. Step 6: Final answer
    x = 12,628,720.99

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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.