Home / 12,985,928.12-17,921,108.32-7,184,615.38

Finding the Fourth Proportional to 12,985,928.12, 17,921,108.32 and 7,184,615.38

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Solution

The fourth proportional to 12,985,928.12, 17,921,108.32 and 7,184,615.38 is: 9,915,061.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,928.12 : 17,921,108.32 = 7,184,615.38 : x
  2. Step 2: Convert to fraction form
    12,985,928.12/17,921,108.32 = 7,184,615.38/x
  3. Step 3: Cross multiply
    12,985,928.12x = 17,921,108.32 × 7,184,615.38
  4. Step 4: Simplify right side
    12,985,928.12x = 128,756,270,462,517.97
  5. Step 5: Solve for x
    x = 128,756,270,462,517.97/12,985,928.12
  6. Step 6: Final answer
    x = 9,915,061.08

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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.