Home / 30,689,149.68-42,350,939.28-16,938,015.12

Finding the Fourth Proportional to 30,689,149.68, 42,350,939.28 and 16,938,015.12

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Solution

The fourth proportional to 30,689,149.68, 42,350,939.28 and 16,938,015.12 is: 23,374,412.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,689,149.68 : 42,350,939.28 = 16,938,015.12 : x
  2. Step 2: Convert to fraction form
    30,689,149.68/42,350,939.28 = 16,938,015.12/x
  3. Step 3: Cross multiply
    30,689,149.68x = 42,350,939.28 × 16,938,015.12
  4. Step 4: Simplify right side
    30,689,149.68x = 717,340,849,870,842
  5. Step 5: Solve for x
    x = 717,340,849,870,842/30,689,149.68
  6. Step 6: Final answer
    x = 23,374,412.69

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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.