Home / 28,868,858.38-39,838,692.45-15,637,782.67

Finding the Fourth Proportional to 28,868,858.38, 39,838,692.45 and 15,637,782.67

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Solution

The fourth proportional to 28,868,858.38, 39,838,692.45 and 15,637,782.67 is: 21,579,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868,858.38 : 39,838,692.45 = 15,637,782.67 : x
  2. Step 2: Convert to fraction form
    28,868,858.38/39,838,692.45 = 15,637,782.67/x
  3. Step 3: Cross multiply
    28,868,858.38x = 39,838,692.45 × 15,637,782.67
  4. Step 4: Simplify right side
    28,868,858.38x = 622,988,814,351,192
  5. Step 5: Solve for x
    x = 622,988,814,351,192/28,868,858.38
  6. Step 6: Final answer
    x = 21,579,960.18

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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.