Home / 13,690,103.63-18,886,809.89-7,885,776.47

Finding the Fourth Proportional to 13,690,103.63, 18,886,809.89 and 7,885,776.47

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Solution

The fourth proportional to 13,690,103.63, 18,886,809.89 and 7,885,776.47 is: 10,879,184.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690,103.63 : 18,886,809.89 = 7,885,776.47 : x
  2. Step 2: Convert to fraction form
    13,690,103.63/18,886,809.89 = 7,885,776.47/x
  3. Step 3: Cross multiply
    13,690,103.63x = 18,886,809.89 × 7,885,776.47
  4. Step 4: Simplify right side
    13,690,103.63x = 148,937,160,949,205.66
  5. Step 5: Solve for x
    x = 148,937,160,949,205.66/13,690,103.63
  6. Step 6: Final answer
    x = 10,879,184.34

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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.