Home / 25,656,428.70-38,430,988.65-12,021,212.70

Finding the Fourth Proportional to 25,656,428.70, 38,430,988.65 and 12,021,212.70

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Solution

The fourth proportional to 25,656,428.70, 38,430,988.65 and 12,021,212.70 is: 18,006,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,656,428.70 : 38,430,988.65 = 12,021,212.70 : x
  2. Step 2: Convert to fraction form
    25,656,428.70/38,430,988.65 = 12,021,212.70/x
  3. Step 3: Cross multiply
    25,656,428.70x = 38,430,988.65 × 12,021,212.70
  4. Step 4: Simplify right side
    25,656,428.70x = 461,987,088,832,935.81
  5. Step 5: Solve for x
    x = 461,987,088,832,935.81/25,656,428.70
  6. Step 6: Final answer
    x = 18,006,679.50

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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.