Home / 21,748,973.52-30,015,495.90-11,961,142.50

Finding the Fourth Proportional to 21,748,973.52, 30,015,495.90 and 11,961,142.50

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Solution

The fourth proportional to 21,748,973.52, 30,015,495.90 and 11,961,142.50 is: 16,507,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748,973.52 : 30,015,495.90 = 11,961,142.50 : x
  2. Step 2: Convert to fraction form
    21,748,973.52/30,015,495.90 = 11,961,142.50/x
  3. Step 3: Cross multiply
    21,748,973.52x = 30,015,495.90 × 11,961,142.50
  4. Step 4: Simplify right side
    21,748,973.52x = 359,019,623,668,065.75
  5. Step 5: Solve for x
    x = 359,019,623,668,065.75/21,748,973.52
  6. Step 6: Final answer
    x = 16,507,428.42

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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.