Home / 28,918,901.85-39,908,491.74-15,865,923.57

Finding the Fourth Proportional to 28,918,901.85, 39,908,491.74 and 15,865,923.57

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Solution

The fourth proportional to 28,918,901.85, 39,908,491.74 and 15,865,923.57 is: 21,895,197.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918,901.85 : 39,908,491.74 = 15,865,923.57 : x
  2. Step 2: Convert to fraction form
    28,918,901.85/39,908,491.74 = 15,865,923.57/x
  3. Step 3: Cross multiply
    28,918,901.85x = 39,908,491.74 × 15,865,923.57
  4. Step 4: Simplify right side
    28,918,901.85x = 633,185,079,740,816.38
  5. Step 5: Solve for x
    x = 633,185,079,740,816.38/28,918,901.85
  6. Step 6: Final answer
    x = 21,895,197.92

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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.