Home / 20,686,543.40-31,047,529.80-9,189,703.10

Finding the Fourth Proportional to 20,686,543.40, 31,047,529.80 and 9,189,703.10

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Solution

The fourth proportional to 20,686,543.40, 31,047,529.80 and 9,189,703.10 is: 13,792,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,543.40 : 31,047,529.80 = 9,189,703.10 : x
  2. Step 2: Convert to fraction form
    20,686,543.40/31,047,529.80 = 9,189,703.10/x
  3. Step 3: Cross multiply
    20,686,543.40x = 31,047,529.80 × 9,189,703.10
  4. Step 4: Simplify right side
    20,686,543.40x = 285,317,580,850,402.38
  5. Step 5: Solve for x
    x = 285,317,580,850,402.38/20,686,543.40
  6. Step 6: Final answer
    x = 13,792,424.15

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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.