Home / 30,728,117.12-42,401,187.60-16,976,261.12

Finding the Fourth Proportional to 30,728,117.12, 42,401,187.60 and 16,976,261.12

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Solution

The fourth proportional to 30,728,117.12, 42,401,187.60 and 16,976,261.12 is: 23,425,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728,117.12 : 42,401,187.60 = 16,976,261.12 : x
  2. Step 2: Convert to fraction form
    30,728,117.12/42,401,187.60 = 16,976,261.12/x
  3. Step 3: Cross multiply
    30,728,117.12x = 42,401,187.60 × 16,976,261.12
  4. Step 4: Simplify right side
    30,728,117.12x = 719,813,632,495,706.12
  5. Step 5: Solve for x
    x = 719,813,632,495,706.12/30,728,117.12
  6. Step 6: Final answer
    x = 23,425,243.72

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1.5x scale

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.