Home / 13,187,999.80-19,781,999.70-7,424,817.40

Finding the Fourth Proportional to 13,187,999.80, 19,781,999.70 and 7,424,817.40

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Solution

The fourth proportional to 13,187,999.80, 19,781,999.70 and 7,424,817.40 is: 11,137,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,999.80 : 19,781,999.70 = 7,424,817.40 : x
  2. Step 2: Convert to fraction form
    13,187,999.80/19,781,999.70 = 7,424,817.40/x
  3. Step 3: Cross multiply
    13,187,999.80x = 19,781,999.70 × 7,424,817.40
  4. Step 4: Simplify right side
    13,187,999.80x = 146,877,735,579,354.78
  5. Step 5: Solve for x
    x = 146,877,735,579,354.78/13,187,999.80
  6. Step 6: Final answer
    x = 11,137,226.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.