Home / 12,543,211.60-18,821,038.20-7,155,998.80

Finding the Fourth Proportional to 12,543,211.60, 18,821,038.20 and 7,155,998.80

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Solution

The fourth proportional to 12,543,211.60, 18,821,038.20 and 7,155,998.80 is: 10,737,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543,211.60 : 18,821,038.20 = 7,155,998.80 : x
  2. Step 2: Convert to fraction form
    12,543,211.60/18,821,038.20 = 7,155,998.80/x
  3. Step 3: Cross multiply
    12,543,211.60x = 18,821,038.20 × 7,155,998.80
  4. Step 4: Simplify right side
    12,543,211.60x = 134,683,326,773,954.16
  5. Step 5: Solve for x
    x = 134,683,326,773,954.16/12,543,211.60
  6. Step 6: Final answer
    x = 10,737,547.21

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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.