Home / 28,426,381.89-39,228,433.21-15,373,640.82

Finding the Fourth Proportional to 28,426,381.89, 39,228,433.21 and 15,373,640.82

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Solution

The fourth proportional to 28,426,381.89, 39,228,433.21 and 15,373,640.82 is: 21,215,638.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426,381.89 : 39,228,433.21 = 15,373,640.82 : x
  2. Step 2: Convert to fraction form
    28,426,381.89/39,228,433.21 = 15,373,640.82/x
  3. Step 3: Cross multiply
    28,426,381.89x = 39,228,433.21 × 15,373,640.82
  4. Step 4: Simplify right side
    28,426,381.89x = 603,083,842,101,899.62
  5. Step 5: Solve for x
    x = 603,083,842,101,899.62/28,426,381.89
  6. Step 6: Final answer
    x = 21,215,638.50

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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.