Home / 21,002,454.30-31,503,681.45-19,207,364.70

Finding the Fourth Proportional to 21,002,454.30, 31,503,681.45 and 19,207,364.70

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Solution

The fourth proportional to 21,002,454.30, 31,503,681.45 and 19,207,364.70 is: 28,811,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,454.30 : 31,503,681.45 = 19,207,364.70 : x
  2. Step 2: Convert to fraction form
    21,002,454.30/31,503,681.45 = 19,207,364.70/x
  3. Step 3: Cross multiply
    21,002,454.30x = 31,503,681.45 × 19,207,364.70
  4. Step 4: Simplify right side
    21,002,454.30x = 605,102,699,002,774.75
  5. Step 5: Solve for x
    x = 605,102,699,002,774.75/21,002,454.30
  6. Step 6: Final answer
    x = 28,811,047.05

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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.