Home / 28,685,340.50-39,585,770.70-15,808,284.50

Finding the Fourth Proportional to 28,685,340.50, 39,585,770.70 and 15,808,284.50

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Solution

The fourth proportional to 28,685,340.50, 39,585,770.70 and 15,808,284.50 is: 21,815,433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685,340.50 : 39,585,770.70 = 15,808,284.50 : x
  2. Step 2: Convert to fraction form
    28,685,340.50/39,585,770.70 = 15,808,284.50/x
  3. Step 3: Cross multiply
    28,685,340.50x = 39,585,770.70 × 15,808,284.50
  4. Step 4: Simplify right side
    28,685,340.50x = 625,783,125,377,364.25
  5. Step 5: Solve for x
    x = 625,783,125,377,364.25/28,685,340.50
  6. Step 6: Final answer
    x = 21,815,433.06

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1.5x scale

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.