Home / 30,690,380.64-42,349,707.96-16,938,458.16

Finding the Fourth Proportional to 30,690,380.64, 42,349,707.96 and 16,938,458.16

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Solution

The fourth proportional to 30,690,380.64, 42,349,707.96 and 16,938,458.16 is: 23,373,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690,380.64 : 42,349,707.96 = 16,938,458.16 : x
  2. Step 2: Convert to fraction form
    30,690,380.64/42,349,707.96 = 16,938,458.16/x
  3. Step 3: Cross multiply
    30,690,380.64x = 42,349,707.96 × 16,938,458.16
  4. Step 4: Simplify right side
    30,690,380.64x = 717,338,756,368,679
  5. Step 5: Solve for x
    x = 717,338,756,368,679/30,690,380.64
  6. Step 6: Final answer
    x = 23,373,406.96

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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.